What is Cooking Measurement Converter?

This tool converts between volume and weight units used in recipes. Pick from 22 common ingredients so cups-to-grams uses the right density, or type your own. Results show the decimal and a recipe-friendly fraction (1/4 cup, 3/4 tsp).

Fifteen cooking units sit on top of two base units: millilitres for volume and grams for weight. Within each side conversions are exact (1 US cup = 236.588 ml; 1 lb = 453.592 g). Crossing between volume and weight needs a density, which is where most home cooks slip: a cup of flour and a cup of honey weigh wildly different amounts. The ingredient picker carries 22 typical densities — flour at 0.508, sugar at 0.845, honey at 1.42, butter at 0.959 g/ml — and a custom slot for anything not listed. The decimal answer comes paired with the nearest familiar fraction so it drops straight into a recipe card.

How to use

1. Type a value and pick the source unit. Volumes include US/UK cups, tbsp, tsp, ml, dl, liters, fluid ounces, pints, quarts; weights include grams, kg, ounces, pounds, sticks of butter.
2. Choose your target unit. If you're crossing between volume and weight, pick an ingredient so the conversion uses its real density.
3. Click any row in the equivalents card to load it instantly, or hit Swap to reverse direction. The result shows both decimal and the nearest cooking fraction.

When to use

• Following an American recipe in a country that sells ingredients by weight or millilitres.
• Scaling a recipe up or down when your measuring set is missing the right size.
• Translating grandma's handwritten card from tablespoons into precise grams for the kitchen scale.

Result

Converting 1.5 cups to milliliters gives 355 ml. Converting 3 tablespoons to teaspoons gives 9 tsp. Useful when a recipe lists units your measuring set doesn't have.

FAQ

Why can't I get an exact gram answer for one cup of flour?

Pick All-purpose flour from the ingredient menu and you'll get about 120 g for one cup, the figure most recipe sites quote. Without an ingredient picked the tool uses water density, which would say 237 g — way off. Real flour also varies by how it's spooned versus scooped (closer to 120 g) or scooped and packed (closer to 150 g), so expect a small wobble either way.

Is 1 cup the same in the US, UK, and Australia?

No. A US cup is 236.588 ml, a UK cup is traditionally 284 ml (an imperial half-pint), and an Australian cup is 250 ml. This tool uses the US standard because most recipes online assume it. If you have a UK or AU recipe, expect a slight shortfall.

How precise is a teaspoon really, given everyone fills them differently?

A level teaspoon is 4.929 ml, a heaping one can run 7 ml or more. For baking with salt, baking powder, or yeast, always level the top with a knife. For looser things like dried herbs or sauce, the variation rarely matters.

Why is my conversion result showing in scientific notation?

Very large numbers (above a million) or very small ones (below 0.001) get formatted as scientific to stay readable. If you see 1.2345e+6, that's 1,234,500. Use the swap button to flip units if a smaller-unit answer would be easier to read.

Can I convert dry weight ounces to fluid ounces?

Only with an ingredient set. Fluid ounces measure volume and dry ounces measure weight; the conversion needs a density. With water selected (the default) 8 dry oz comes out as 8 fl oz, which is a coincidence. With flour selected the same 8 oz fills closer to 15 fl oz. Pick the ingredient closest to what you're measuring, or weigh dry goods on a scale and skip the conversion entirely.

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