# YouCalc > Calculators for modern life. 118 free, no-sign-up calculators across categories from money, math, and health to the curious in-between — multi-currency and available in 9 languages. Each page below is also available as token-efficient Markdown by appending ".md" to its URL or by sending an "Accept: text/markdown" request header. ## Finance & Money Loans, mortgages, savings, taxes, and everyday money decisions. - [Auto Loan Calculator](https://youcalc.com/en/finance-money/auto-loan/): Estimate your monthly car payment, amount financed, sales tax, total interest and out-the-door price from price, down payment, trade-in, fees and APR. Free. - [Compound Interest Calculator](https://youcalc.com/en/finance-money/compound-interest/): See how savings grow with compound interest and regular contributions. Pick your rate, frequency and term, then watch contributions vs. interest stack up. - [Cost Per Wear Calculator](https://youcalc.com/en/finance-money/cost-per-wear/): Work out the real cost of clothes, shoes, and accessories per use. See why cheap-but-rarely loses to pricey-but-daily. Free, instant, no sign-up. - [Debt Payoff Calculator](https://youcalc.com/en/finance-money/debt-payoff/): Compare the debt snowball and debt avalanche methods side by side. See months to debt-free, total interest, and how much avalanche saves. Free, multi-currency. - [Emergency Fund Calculator](https://youcalc.com/en/finance-money/emergency-fund/): Size your emergency fund (the common guide is 3–6 months of expenses), see how funded you are, and how long it takes to reach your target. Multi-currency, free. - [EV vs Gas Calculator](https://youcalc.com/en/finance-money/ev-vs-gas/): Compare what an electric car and a gasoline car cost to run each year, see which is cheaper, and how long an EV takes to pay back its higher price. Multi-currency, US/metric, free. - [FIRE Number Calculator](https://youcalc.com/en/finance-money/fire-number/): Find your FIRE number with the 4% rule (25× annual spending), see your progress, and estimate years to financial independence. An estimate, not advice. Multi-currency, free. - [Inflation Time Machine](https://youcalc.com/en/finance-money/inflation-time-machine/): See what a US dollar amount from any year since 1913 is worth in another year, using official CPI-U inflation data. Free, instant, no sign-up. - [Loan Calculator](https://youcalc.com/en/finance-money/loan/): Estimate your personal loan repayments and compare an alternative loan side by side. Multi-currency, free, no sign-up. - [Mortgage Payoff Calculator](https://youcalc.com/en/finance-money/mortgage-payoff/): See how extra monthly payments, biweekly schedules, or refinancing affect your mortgage payoff date and total interest. Multi-currency, free, no sign-up. - [Mortgage Calculator](https://youcalc.com/en/finance-money/mortgage/): Estimate your full monthly mortgage payment: principal, interest, property taxes, home insurance, PMI, and HOA. Multi-currency, free, no sign-up. - [Retirement Savings Calculator](https://youcalc.com/en/finance-money/retirement-savings/): Project your retirement nest egg from your age, balance, monthly contributions, employer match and expected return. See nominal and inflation-adjusted values. - [ROI Calculator](https://youcalc.com/en/finance-money/roi/): Calculate return on investment (ROI) and compound annual growth rate (CAGR) from a starting value, ending value, and holding period. Free, multi-currency. ## Social Media & SEO Engagement rates, ad spend, follower growth, and content reach. - [CPM, CPC & CTR Calculator](https://youcalc.com/en/social-media-seo/ad-metrics-cpm-cpc-ctr/): Free CPM calculator, CPC calculator, and CTR calculator in one. Enter any two ad metrics and instantly solve the rest. Compare your results against platform benchmarks for Google, Meta, TikTok, and LinkedIn. - [Email Marketing ROI Calculator](https://youcalc.com/en/social-media-seo/email-marketing-roi/): Free email marketing ROI calculator. Enter sends, deliverability, open rate, CTOR, and conversion rate to see revenue, ROI %, revenue per send, cost per conversion, and a full funnel breakdown. Multi-currency. - [Follower Growth Calculator](https://youcalc.com/en/social-media-seo/follower-growth-projector/): Free follower growth projector. Enter your current followers and monthly net new to see a 24-month compound growth chart, milestones, and months to reach any target — Instagram, TikTok, YouTube, X, LinkedIn. - [Influencer Rate Card Calculator](https://youcalc.com/en/social-media-seo/influencer-rate-card/): Free influencer pricing calculator. Get a fair-market rate card by platform, follower count, engagement rate, niche, and content format. Floor, mid, and ceiling prices, multi-currency. - [Instagram Engagement Rate Calculator](https://youcalc.com/en/social-media-seo/instagram-engagement-rate/): Free Instagram engagement rate calculator. Calculate ER by followers, reach, and impressions. See how your rate compares to nano, micro, macro, and mega creator benchmarks. - [LinkedIn Engagement Rate Calculator](https://youcalc.com/en/social-media-seo/linkedin-engagement-rate/): Free LinkedIn engagement rate calculator. Calculate ER by impressions and by followers. Compare your rate to B2B industry benchmarks and see the impact of content format on reach. - [Membership Revenue Calculator](https://youcalc.com/en/social-media-seo/membership-revenue/): Free membership revenue calculator. Compare net income after platform fees and payment processing across Patreon, Substack, and beehiiv. Multi-tier, churn projection, multi-currency. - [Newsletter Revenue Calculator](https://youcalc.com/en/social-media-seo/newsletter-monetisation/): Free newsletter monetisation calculator. Estimate ad (CPM sponsorship) revenue, paid subscription income, and subscriber LTV. See a 12-month growth projection — multi-currency, no sign-up. - [ROAS Calculator](https://youcalc.com/en/social-media-seo/roas-break-even/): Free ROAS calculator. Find your return on ad spend, break-even ROAS from gross margin, gross profit, and how much to spend to hit a revenue goal. Multi-currency, no sign-up. - [SEO Traffic Estimator](https://youcalc.com/en/social-media-seo/seo-traffic-estimator/): Estimate monthly organic visits and revenue from any keyword. Enter search volume, target SERP position, AI Overview impact, conversion rate, and order value. Free, multi-currency. - [TikTok Earnings Calculator](https://youcalc.com/en/social-media-seo/tiktok-earnings/): Free TikTok money calculator. Estimate your monthly income from Creator Rewards, brand deals, and LIVE gifts by niche, audience country, followers, and views. Multi-currency, no sign-up. - [Viral Coefficient Calculator](https://youcalc.com/en/social-media-seo/viral-coefficient/): Calculate your product's viral coefficient (K-factor). Model exponential user growth over cycles, find your K-factor, and see whether you're viral, linear, or sub-viral. - [YouTube Earnings Estimator](https://youcalc.com/en/social-media-seo/youtube-revenue/): Free YouTube earnings estimator. Calculate AdSense revenue by monthly views, content niche, audience country, video length, and season. Multi-currency, no sign-up. ## Date & Time Age, durations, countdowns, and date arithmetic. - [Anniversary Countdown Calculator](https://youcalc.com/en/date-time/anniversary-countdown/): How long you've been together down to the day, the traditional gift for each year, and a countdown to your next anniversary. - [Project Deadline Planner](https://youcalc.com/en/date-time/deadline-planner/): Schedule project phases in working days from a start date, skip weekends and holidays, and see whether you’ll hit the deadline — with a Gantt timeline and buffer. Free. - [Meeting Timezone Fairness Calculator](https://youcalc.com/en/date-time/meeting-timezone-fairness/): Find the fairest meeting time for a global team. Enter each person's UTC offset and rank every slot by how evenly it shares the off-hours burden. Free, no DST guesswork. - [Nth Weekday of the Month Finder](https://youcalc.com/en/date-time/nth-weekday-finder/): Find the exact date of the 1st–5th or last Monday, Thursday, etc. in any month and year — like the 3rd Thursday of November. - [Time Card Calculator with Overtime](https://youcalc.com/en/date-time/time-card-overtime/): Add up weekly hours from daily clock-in and clock-out times, subtract breaks, and calculate overtime and pay under FLSA or California rules. Multi-currency, free. - [Business Days Calculator](https://youcalc.com/en/date-time/working-days-counter/): Count working days between two dates excluding weekends and US/UK public holidays, or add and subtract business days. Custom holidays and a calendar view. Free. ## Health & Body BMI, calories, body fat, heart rate, and fitness targets. - [BMI Calculator](https://youcalc.com/en/health-body/bmi/): Calculate your Body Mass Index and see where you land on the WHO healthy-weight range. Metric or imperial, instant, free, no sign-up. - [BMR Calculator](https://youcalc.com/en/health-body/bmr/): Calculate your basal metabolic rate with the Mifflin-St Jeor equation and preview your daily calorie needs by activity level. Metric or imperial, instant, free. - [Body Fat Calculator](https://youcalc.com/en/health-body/body-fat/): Estimate your body-fat percentage with the U.S. Navy circumference method and see your fitness category. Metric or imperial, instant, free, no sign-up. - [Caffeine Half-Life Calculator](https://youcalc.com/en/health-body/caffeine-half-life/): Estimate how much caffeine is left in your body at bedtime and when it drops below the level that disrupts sleep. Free, instant, no sign-up. - [Calorie Calculator](https://youcalc.com/en/health-body/calorie/): Calculate your daily calorie needs (TDEE) and a balanced macro split for losing, maintaining or gaining weight. Mifflin-St Jeor, metric or imperial, free. - [Daily Water Intake Calculator](https://youcalc.com/en/health-body/hydration-needs/): Estimate a daily water target from your body weight, exercise, and climate. Shown as an easy range in litres and cups. Free, instant, no sign-up. - [Ideal Weight Calculator](https://youcalc.com/en/health-body/ideal-weight/): Find your ideal body weight from four classic formulas plus the healthy BMI range for your height. Metric or imperial, instant, free, no sign-up. - [Ovulation Calculator](https://youcalc.com/en/health-body/ovulation/): Estimate your ovulation day and fertile window from your last period and cycle length, with your next three cycles projected. Free, instant — not a contraceptive method. - [Pregnancy Due Date Calculator](https://youcalc.com/en/health-body/pregnancy-due-date/): Estimate your due date from your last period, conception date or IVF transfer, and see your gestational age and trimester on a 40-week timeline. Free, instant. - [Protein Target Calculator](https://youcalc.com/en/health-body/protein-target/): Estimate a sensible daily protein range for your body weight and goal, plus how much to aim for per meal. Free, instant, no sign-up. - [Sleep Debt Calculator](https://youcalc.com/en/health-body/sleep-debt/): Estimate the sleep debt you have built up from short nights and how many recovery nights it takes to pay it back. Free, instant, no sign-up. ## Math Percentages, ratios, fractions, and quick algebra. - [Exponential Growth & Decay Calculator](https://youcalc.com/en/math/exponential-growth-decay/): Project exponential growth or decay with the continuous N₀·e^{kt} or discrete N₀·(1±r)^t model. Get the value at any time, doubling time or half-life, and a plotted curve. - [Fraction Calculator](https://youcalc.com/en/math/fraction-operations/): Add, subtract, multiply and divide fractions and mixed numbers with the LCM common-denominator steps shown, plus the simplified, mixed and decimal results and pie visuals. - [Matrix Calculator](https://youcalc.com/en/math/matrix-operations/): Add, subtract, scalar-multiply, multiply, transpose, and find the determinant and inverse of matrices up to 3×3 — with the result laid out and a magnitude heatmap. - [Percentage Calculator](https://youcalc.com/en/math/percentage/): Free percentage calculator: find X% of Y, what percent one number is of another, percentage increase or decrease, difference, and add or subtract a percent. - [Permutations & Combinations Calculator](https://youcalc.com/en/math/permutations-combinations/): Compute permutations (nPr) and combinations (nCr), plus the with-repetition variants, with factorial expansions and a Pascal’s-triangle view. Free nPr/nCr calculator. - [Prime Factorization Calculator](https://youcalc.com/en/math/prime-factorization/): Find the prime factorization of one or two numbers with an interactive factor tree, the exponential form, and the greatest common factor (GCF) and least common multiple (LCM). - [Quadratic Equation Solver](https://youcalc.com/en/math/quadratic-equation/): Solve ax²+bx+c=0 with step-by-step working: real or complex roots, discriminant, vertex, axis of symmetry, and a plotted parabola. Free quadratic formula calculator. - [Scientific Notation & Significant Figures Calculator](https://youcalc.com/en/math/scientific-notation/): Convert any number to scientific, E and engineering notation, count its significant figures, and round to a chosen number of sig figs — with a magnitude number line. - [Slope & Line Equation Calculator](https://youcalc.com/en/math/slope-line-equation/): Find the slope and equation of a line from two points: slope-intercept (y = mx + b), point-slope and standard forms, intercepts, midpoint, distance and angle, with a graph. - [Standard Deviation Calculator](https://youcalc.com/en/math/statistics-standard-deviation/): Calculate mean, median, mode, range, population and sample standard deviation, variance, quartiles, IQR and outliers from a data set, with a histogram and ±σ bands. - [System of Equations Solver](https://youcalc.com/en/math/system-of-equations/): Solve 2×2 and 3×3 linear systems with Cramer’s rule and the determinant. See the unique solution, or whether the system has no solution or infinitely many, with a graph. - [Triangle Solver](https://youcalc.com/en/math/triangle-solver/): Solve any triangle from three known sides or angles using the Law of Sines and Cosines. Get all six elements, area, perimeter, circumradius and inradius, with a scaled diagram. - [Z-Score & Normal Distribution Calculator](https://youcalc.com/en/math/z-score-normal-distribution/): Convert a raw score to a z-score and find left, right, between and two-tailed probabilities, or reverse-solve a value from a percentile, with a shaded normal curve. ## Lifestyle & Everyday Tips, splits, fuel, and the small sums of daily life. - [Commute Cost Calculator](https://youcalc.com/en/lifestyle-everyday/commute-cost/): See the real yearly cost of your commute — fuel, parking or transit fare — plus how many full days of your life it eats up. Drive, transit, bike or walk; US or metric; multi-currency. - [Discount Calculator](https://youcalc.com/en/lifestyle-everyday/discount/): Calculate the sale price after one or two stacked discounts, add optional sales tax, and see how much you save. Multi-currency, instant, free. - [Electricity Cost Calculator](https://youcalc.com/en/lifestyle-everyday/electricity-cost/): Calculate the electricity cost of any appliance or device. Enter watts, hours per day, and your electricity rate to see daily, monthly, and yearly running costs. Multi-currency, instant, free. - [Fuel Cost Calculator](https://youcalc.com/en/lifestyle-everyday/fuel-cost/): Estimate the total fuel cost for any road trip. Enter distance, fuel consumption, and gas price. Supports metric and imperial units, multi-currency, instant, free. - [Unit Price Calculator](https://youcalc.com/en/lifestyle-everyday/grocery-unit-price/): Compare grocery options by real cost per 100 g, per litre, or per item — across pack sizes and discounts — to spot the best value in the aisle. Multi-currency, free. - [Lifestyle Creep Calculator](https://youcalc.com/en/lifestyle-everyday/lifestyle-creep/): See how much of your pay rise gets absorbed by higher spending, how much you keep, and what the absorbed amount could grow to if invested. Multi-currency, free. - [Rent Affordability Calculator](https://youcalc.com/en/lifestyle-everyday/rent-affordability/): Check your rent against the 30%-of-income rule, see what's left each month, and total the cash to move in. A guide using a rule of thumb (HUD cost-burden), not advice. Multi-currency, free. - [Rent vs. Buy Calculator](https://youcalc.com/en/lifestyle-everyday/rent-vs-buy/): Compare renting against buying a home year by year. See the break-even point where buying gets cheaper, your monthly payment, and net costs. A scenario tool, not advice. Multi-currency, free. - [Sleep Cycle Calculator](https://youcalc.com/en/lifestyle-everyday/sleep/): Find the ideal bedtime or wake-up time based on 90-minute sleep cycles. Free, instant, no sign-up. - [Subscription Audit Calculator](https://youcalc.com/en/lifestyle-everyday/subscription-audit/): Add up every recurring subscription, see the true monthly and yearly cost, and find how much you’d save by cancelling the ones you don’t use. Multi-currency, free. - [Tip Calculator](https://youcalc.com/en/lifestyle-everyday/tip/): Calculate the tip and split the bill evenly between any number of people. Multi-currency, instant, free, no sign-up. ## Pets & Animals Pet age, feeding, dosage, and animal care numbers. - [Cat Age Calculator (Cat Years to Human Years)](https://youcalc.com/en/pets-animals/cat-age-calculator/): Convert your cat's age to human years with the vet 15-9-4 method and see its AAHA/AAFP life stage. Not a substitute for veterinary advice. - [Dog Age Calculator](https://youcalc.com/en/pets-animals/dog-age-calculator/): Convert your dog’s age to human years using the AKC size-based chart and the UC San Diego epigenetic formula, with the AAHA life stage. Free and instant. - [Dog & Cat Calorie Calculator](https://youcalc.com/en/pets-animals/pet-calorie-calculator/): Work out how much to feed your dog or cat: daily calories (RER and DER) by life stage, converted to cups or grams of your food. Free and instant. - [Puppy Weight Predictor (How Big Will My Puppy Get?)](https://youcalc.com/en/pets-animals/puppy-weight-predictor/): Estimate your puppy's adult weight from its current age, weight, and breed size, with a growth curve. ## Unique & Playful Fun, quirky, and curiosity-driven calculators. - [Digital Detox Calculator](https://youcalc.com/en/unique-playful/digital-detox/): See how many hours — and how much money-equivalent — you reclaim by cutting daily screen time. Fun book, workout, and movie equivalents. Free, instant, no sign-up. - [How Rich Am I? Global Income Percentile Calculator](https://youcalc.com/en/unique-playful/global-income-percentile/): See where your income ranks among everyone on Earth. Enter your income and country and we PPP-adjust it to show what percentage of the world you out-earn. Free. - [Relativity Date Night](https://youcalc.com/en/unique-playful/relativity-date-night/): A fast trip really does make you age slightly slower. Pick a speed and trip length to see your time dilation in nanoseconds, from Einstein’s formula. Just for fun. - [Weight on Other Planets Calculator](https://youcalc.com/en/unique-playful/weight-on-planets/): See what you would weigh on the Moon, Mars, Jupiter and every planet using real NASA surface-gravity data — plus how high you could jump. Free and instant. ## Conversions & Units Length, weight, temperature, volume, and unit swaps. - [Aspect Ratio Calculator](https://youcalc.com/en/conversions-units/aspect-ratio-calculator/): Calculate missing width or height from a target aspect ratio, or simplify any pixel dimensions to their lowest-term ratio (16:9, 4:3, 21:9 and more). Instant visual rectangle preview. - [Download Time Calculator](https://youcalc.com/en/conversions-units/download-time-calculator/): Calculate exactly how long a file will take to download. Handles decimal (MB=10⁶) vs binary (MiB=2²⁰) prefixes and bits-vs-bytes — far more accurate than a simple SERP result. - [Fuel Economy Converter](https://youcalc.com/en/conversions-units/fuel-economy-converter/): Convert between mpg (US & UK), L/100km, km/L and mi/L instantly. Understand the inverse relationship between mpg and litres-per-100km with a visual comparison bar. Free and instant. - [Land Area Converter](https://youcalc.com/en/conversions-units/land-area-converter/): Convert land area between m², km², hectares, acres, sq ft, sq yd, and South-Asian regional units — bigha, kanal, marla, katha, cent. Includes a to-scale plot visualiser. - [Number Base Converter](https://youcalc.com/en/conversions-units/number-base-converter/): Convert any number between binary, octal, decimal, hexadecimal and any base from 2 to 36 — with a step-by-step positional breakdown showing digit × base^place. - [PPI & DPI Calculator](https://youcalc.com/en/conversions-units/ppi-dpi-print-size/): Calculate screen PPI (pixel density), print size from pixel dimensions, or pixels needed for a target print size. Understand the difference between PPI and DPI. - [Ring Size Converter](https://youcalc.com/en/conversions-units/ring-size-converter/): Convert ring sizes between EU/ISO, US, UK and Japanese systems instantly. Enter inner circumference, diameter, or a known size — get all four systems plus a to-scale circle diagram. Free. - [Roman Numeral Converter](https://youcalc.com/en/conversions-units/roman-numeral-converter/): Convert between Arabic numbers and Roman numerals instantly. See the step-by-step additive breakdown (e.g. 1994 → M+CM+XC+IV). Supports 1–3999. Free and instant. - [Shoe Size Converter](https://youcalc.com/en/conversions-units/shoe-size-converter/): Convert shoe sizes instantly between US (men/women/kids), UK, EU and Japanese sizing. Enter your foot length or a known size to see all systems at once. - [Temperature Converter](https://youcalc.com/en/conversions-units/temperature-converter/): Convert between °C, °F, K and °Rankine all at once, with a visual thermometer marking freezing, body temperature, boiling and oven heat. Free and instant. - [Unit Converter](https://youcalc.com/en/conversions-units/unit-converter/): Convert any unit instantly: metres, feet, kilograms, pounds, litres, gallons, m², acres, km/h, mph and more — all in one free universal converter. - [Video File Size Calculator](https://youcalc.com/en/conversions-units/video-file-size-calculator/): Calculate video file size from bitrate and duration, or find the bitrate needed to hit a target file size. Compare 720p, 1080p and 4K storage requirements instantly. ## Construction & Home Materials, areas, paint, flooring, and home projects. - [BTU Calculator](https://youcalc.com/en/construction-home/btu-calculator/): Find the right AC or heating size for any room. Enter floor area, sun exposure, occupants and ceiling height to get BTU, tonnage and heating output instantly. - [Concrete Calculator](https://youcalc.com/en/construction-home/concrete-calculator/): Calculate how many cubic yards of concrete you need for a slab, footing or column — plus bags of pre-mix and an optional cost estimate. Free and instant. - [Deck Calculator](https://youcalc.com/en/construction-home/deck-calculator/): Calculate exactly how many deck boards, joists, and screws you need for your deck build — with waste factor and cost estimate. Free and instant. - [Drywall Calculator](https://youcalc.com/en/construction-home/drywall-calculator/): Calculate how many drywall sheets, screws, joint compound and tape you need for any room — with a cost estimate. Free, instant and accurate. - [Fence Calculator](https://youcalc.com/en/construction-home/fence-calculator/): Estimate how many fence posts, pickets, rails and concrete bags you need for any fence length. Enter post spacing and picket size for an instant material count and cost estimate. - [Flooring Calculator](https://youcalc.com/en/construction-home/flooring-calculator/): Calculate how many boxes of laminate, hardwood or vinyl flooring — or how many tiles — you need for any room, including a waste allowance and cost estimate. Free and instant. - [Landscaping Materials Calculator](https://youcalc.com/en/construction-home/landscaping-materials-volume/): Calculate how many cubic yards of mulch, gravel, topsoil, or sand you need for any area. Includes weight in tonnes and an optional cost estimate. Free and instant. - [Paint Calculator](https://youcalc.com/en/construction-home/paint-calculator/): Work out how many gallons or litres of paint you need for a room, allowing for coats, ceiling, doors and windows — with a cost estimate. Free and instant. - [Rebar Calculator](https://youcalc.com/en/construction-home/rebar-calculator/): Calculate how many rebar bars you need, their total length and weight for a concrete slab grid. Supports all ASTM A615 sizes (#3–#8) and optional cost estimate. Free and instant. - [Roofing Calculator](https://youcalc.com/en/construction-home/roofing-calculator/): Calculate roof area, roofing squares and shingle bundles needed for any roof pitch and footprint. Includes waste allowance and cost estimate. Free and instant. - [Shower Water Cost Calculator](https://youcalc.com/en/construction-home/shower-water-cost/): See how much water your showers use and what they cost per year, plus what a shorter shower or low-flow head saves. Gallons or litres, multi-currency, free. - [Stair Calculator](https://youcalc.com/en/construction-home/stair-calculator/): Calculate the number of steps, riser height, total run and stringer length for any staircase. Checks IRC R311.7 code compliance instantly. Free and instant. - [Wallpaper Calculator](https://youcalc.com/en/construction-home/wallpaper-calculator/): Calculate exactly how many wallpaper rolls you need for a room, accounting for pattern repeat waste, openings, and roll size. Free and instant. ## Education & Grades GPA, test scores, weighted grades, and study planning. - [Attendance Calculator](https://youcalc.com/en/education-grades/attendance-calculator/): Track your attendance percentage, find how many classes you can skip, and see how many you must attend to stay above your required minimum. Free and instant. - [CGPA to Percentage Calculator](https://youcalc.com/en/education-grades/cgpa-to-percentage/): Convert CGPA to percentage instantly using the CBSE formula (×9.5). Also reverse percentage to CGPA, compute subject-wise CGPA, and get your 4.0 GPA equivalent. Free, no sign-up. - [Class Rank Percentile Calculator](https://youcalc.com/en/education-grades/class-rank-percentile/): Convert your class rank to a percentile (or reverse) instantly. See where you stand and what "top X%" means for your rank. Free, no sign-up. - [Cumulative GPA Calculator](https://youcalc.com/en/education-grades/cumulative-gpa-calculator/): Calculate your new cumulative GPA after a term, or find the term GPA you need to hit your target. Supports 4.0 and weighted 5.0 scales. Free, instant, no sign-up. - [ECTS Grade Converter](https://youcalc.com/en/education-grades/ects-grade-converter/): Convert ECTS letter grades to US GPA, UK degree classifications, and back. Use the official distribution bands or the full cross-system mapping table. Free, instant, no sign-up. - [Final Grade Calculator](https://youcalc.com/en/education-grades/final-grade-calculator/): Find the exact score you need on your final exam to hit your target grade, plus your best- and worst-case outcomes. Free, instant, no sign-up. - [GPA Calculator](https://youcalc.com/en/education-grades/gpa-weighted-grade/): Calculate your weighted and unweighted GPA instantly. Supports Regular, Honors, and AP/IB courses on the standard 4.0 scale. Free, no sign-up. - [Grade Curve Calculator](https://youcalc.com/en/education-grades/grade-curve-calculator/): Curve grades with four methods: flat boost, square-root (Texas) curve, scale to the class top, or bell-curve remap. Instant results, free, no sign-up. - [Grade Percentage to Letter Grade & GPA Calculator](https://youcalc.com/en/education-grades/grade-percentage-letter/): Instantly convert any percentage score to a letter grade (A, B+, C…) and GPA points. Supports standard and plus-minus scales. Free, no sign-up. - [Study Time Planner](https://youcalc.com/en/education-grades/study-time-planner/): Enter your exam date, daily study hours, and subjects to get a personalised study plan with per-subject hour breakdown. Free and instant. - [Test Grade Calculator](https://youcalc.com/en/education-grades/test-grade-calculator/): Enter the number of questions right or wrong and get your percentage score and letter grade in seconds. Includes an EZ-grader reference table for every total. - [Weighted Grade Calculator](https://youcalc.com/en/education-grades/weighted-grade-calculator/): Calculate your overall course grade from weighted categories (homework, quizzes, exams). Works even when weights don't add to 100%. Free and instant. ## Cooking & Food Recipe scaling, conversions, portions, and kitchen math. - [Coffee to Water Ratio Calculator](https://youcalc.com/en/cooking-food/coffee-ratio-calculator/): How many grams of coffee for your water or cups, using the SCA golden ratio, with presets per brew method. - [Meal Prep Cost Calculator](https://youcalc.com/en/cooking-food/meal-prep-cost/): Add up your ingredients, split by servings, and see the real cost per serving of your meal prep — plus how much you save versus takeout. Multi-currency, free. - [Recipe Converter](https://youcalc.com/en/cooking-food/recipe-converter/): Convert cups to grams, ml to oz, scale recipe servings, and look up ingredient weights. Free, instant, no sign-up. - [Meat Roasting Time & Temperature Calculator](https://youcalc.com/en/cooking-food/roast-time-calculator/): Estimate roasting time by weight and see the USDA safe internal temperature for beef, pork, lamb, chicken, and turkey. ## Others Handy calculators that do not fit the other categories. - [Freelance Hourly Rate Calculator](https://youcalc.com/en/others/freelance-hourly-rate/): Find the hourly and daily rate you must charge to hit your take-home goal after expenses, taxes, and realistic billable hours. - [Profit Margin & Markup Calculator](https://youcalc.com/en/others/profit-margin-markup/): Turn cost and price into gross/net margin and markup %, and find the price for a target margin. ## Optional - [Full reading list (with descriptions)](https://youcalc.com/llms-full.txt) - [XML sitemap](https://youcalc.com/sitemap.xml) - [About YouCalc](https://youcalc.com/en/about) - [FAQ](https://youcalc.com/en/faq)