Cooking Measurement Converter

Why a generic unit converter gets recipes wrong

A cup of flour weighs about 120 grams. A cup of honey weighs about 340 grams. A cup of water weighs about 237 grams. Those are three completely different weights for the exact same volume, because volume-to-weight conversion depends entirely on how dense the ingredient is — and a generic converter that just applies a flat '1 cup = X grams' rule to everything will be wrong for almost anything except water. This tool uses real, ingredient-specific density figures for over 20 common baking and cooking staples, so switching between cups and grams actually gives you the right number for what you're measuring.

How to use it

• Pick your ingredient from the list — flour, sugar, butter, honey, rice, and many more, each with its own accurate density.
• Not on the list? Choose 'Custom ingredient' and enter its weight per US cup if you know it (check the packaging or a trusted recipe source).
• Enter an amount and pick its unit — cups, tablespoons, teaspoons, fluid ounces, milliliters, or liters for volume; grams, kilograms, ounces, or pounds for weight.
• Every other unit updates instantly, split into a Volume section and a Weight section so you can see both at a glance.

Real-world use cases

Converting a US recipe to metric

US recipes measure by volume (cups, tablespoons); most of the rest of the world bakes by weight (grams). Pick the ingredient, enter the cup amount from the recipe, and read off the gram equivalent for more consistent, repeatable baking results.

Scaling a recipe up or down

Need 1.5x a recipe that calls for 2/3 cup of butter? Enter 0.667 cups of butter and read the exact gram weight, then scale that gram figure by 1.5 for a much more precise result than eyeballing fractional cup measurements.

Common questions

Why do different ingredients have different gram-per-cup weights?

Because density varies by how tightly the ingredient packs and how much air or liquid it contains. Flour is light and full of air pockets; honey is a dense, viscous liquid; butter sits in between. A cup measures volume, not weight, so the weight always depends on what's filling that cup.

Is 'packed' vs 'unpacked' brown sugar different?

Yes — this tool's brown sugar figure assumes the common 'packed' measurement most recipes call for. If a recipe specifies loosely spooned brown sugar, actual weight will run a bit lower than shown here.

How accurate are these density figures?

They're solid reference averages used widely in baking, but any individual ingredient can vary a little by brand, moisture content, and how it's measured (scooped vs. spooned and leveled). For baking where precision really matters, weighing ingredients on a kitchen scale is always more accurate than a volume measurement, however careful.

Can I add an ingredient that's not in the list?

Yes — select 'Custom ingredient' and enter its weight per US cup manually if you know it or can look it up, and the same conversion table works for it.

Does this use US or metric cups?

US customary cups (236.588 ml) — the standard used in most American recipes and cookbooks.