# Recipe Converter — Cooking Unit Converter & Ingredient Weights

> Convert cups to grams, ml to oz, scale recipe servings, and look up ingredient weights. Free, instant, no sign-up.

- **Category:** Cooking & Food
- **Interactive calculator:** https://youcalc.com/en/cooking-food/recipe-converter/
- **Price:** Free, no sign-up required

## Overview

This calculator converts cooking measurements between cups, tablespoons, teaspoons, millilitres, grams, ounces, and more — including cross-class conversions that cross the volume-to-weight boundary using ingredient-specific densities. You can also scale the entire recipe up or down by entering your original and desired serving counts.

## How to read your result

The headline figure is the converted amount in your chosen target unit. Below the result card, a reference table shows how 1 cup, 1 tbsp, and 1 tsp translate to grams for the selected ingredient, so you can quickly double-check related measurements without re-entering values.

## Method

Same-class conversions use exact NIST ratio factors (NIST Handbook 44 / SP 811): 1 cup = 236.5882365 ml, 1 tbsp = 14.78676478 ml, 1 tsp = 4.92892159 ml, 1 fl oz = 29.5735295625 ml for volume; 1 oz = 28.349523125 g and 1 lb = 453.59237 g for mass. Cross-class conversions bridge volume and mass through ingredient density (g/ml). Volume to mass: convert the input to ml, multiply by density to get grams, then convert grams to the target mass unit. Mass to volume: convert to grams, divide by density to get ml, then convert to the target volume unit. Density values for baking solids come from the King Arthur Baking Ingredient Weight Chart (grams per cup divided by 236.5882365 ml/cup); pure liquids use direct g/ml values (water = 1.0, whole milk = 1.03). When original and desired servings are both provided, the raw amount is multiplied by the scale ratio (desired ÷ original) before the unit conversion is applied.

## Example

- **Setup:** A cookie recipe calls for 2 cups of all-purpose flour and makes 4 servings. Scale it to 6 servings and convert to grams.
- **Result:** Scale ratio is 6 ÷ 4 = 1.5, so 2 × 1.5 = 3 cups are needed. At 120 g per cup (King Arthur standard), 3 cups of all-purpose flour equals 360 g.

## Frequently asked questions

### Why do different ingredients convert to different gram weights for the same cup volume?

A cup is a fixed volume, but grams measure mass. Dense ingredients like honey (about 336 g per cup) weigh far more than light, airy ones like all-purpose flour (about 120 g per cup). The calculator uses ingredient-specific densities from the King Arthur Baking Weight Chart to handle this correctly.

### Are the gram weights exact?

They match the King Arthur Baking Ingredient Weight Chart, which is the baking industry standard. Real weights can vary slightly depending on how an ingredient is sifted, packed, or stored. Weighing on a scale is always more precise than volume measures.

### How does servings scaling work?

Enter the original number of servings the recipe makes and the number you want. The calculator multiplies every amount by desired ÷ original before converting units, so you only need to enter one ingredient at a time.

### Can I convert between any two units directly?

Yes — within the same class (volume to volume, or mass to mass) the conversion uses exact NIST factors. Across classes (volume to mass or vice versa) the calculator needs an ingredient to look up the density; selecting the correct ingredient from the list gives the most accurate result.

### What NIST measurement standards does the calculator use?

Volume conversions use the exact factors from NIST Handbook 44 and SP 811: 1 cup = 236.5882365 ml, 1 tbsp = 14.78676478 ml, 1 tsp = 4.92892159 ml, 1 fl oz = 29.5735295625 ml. Mass conversions use 1 oz = 28.349523125 g and 1 lb = 453.59237 g.

## Related calculators

- [Unit Converter](https://youcalc.com/en/conversions-units/unit-converter/)
- [Calorie Calculator](https://youcalc.com/en/health-body/calorie/)
- [Temperature Converter](https://youcalc.com/en/conversions-units/temperature-converter/)
- [Fuel Economy Converter](https://youcalc.com/en/conversions-units/fuel-economy-converter/)
- [BMI Calculator](https://youcalc.com/en/health-body/bmi/)

## Sources

- https://www.kingarthurbaking.com/learn/ingredient-weight-chart
- https://www.nist.gov/pml/owm/nist-handbook-44

---

Interactive version: https://youcalc.com/en/cooking-food/recipe-converter/ · From YouCalc — https://youcalc.com