# Health & Body — YouCalc

> BMI, calories, body fat, heart rate, and fitness targets.

## All Health & Body calculators

- [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.

## Optional

- [YouCalc](https://youcalc.com/en/)
- [XML sitemap](https://youcalc.com/sitemap.xml)