Exact kitchen factors
US kitchen measures are defined in milliliters: the legal US cup is 236.5882365 mL, a tablespoon 14.7868 mL, a teaspoon 4.92892 mL, and a fluid ounce 29.5735 mL. That fixes the relationships you memorize — 16 tablespoons per cup, 3 teaspoons per tablespoon — and this tool shows the exact factor line for every conversion. British imperial measures are bigger: an imperial pint is 568.261 mL (20 fl oz) against the US pint’s 473.176 mL, and an imperial gallon is 4546.09 mL against 3785.41 mL.
When cups meet grams
Volume and weight only connect through density, and density depends on the ingredient. The reference densities here track common kitchen weights: all-purpose flour at 120 g per cup (0.5072 g/mL), bread flour 127 g, granulated sugar 200 g, packed brown sugar 220 g, butter 227 g (two sticks), oil 216 g, and honey 340 g — nearly a cup and a half of water by weight.
Reading the results panel
Every answer shows the substituted arithmetic, the milliliter equivalent, the ingredient’s weight, and — for pure volume conversions — a spoon breakdown that splits awkward amounts into whole tablespoons plus teaspoons, the way you’d actually measure them.
Worked example
- A UK recipe demands 250 g of flour; your scoops are US cups.
- Enter 250, choose all-purpose flour, grams → cups.
- 250 g ÷ 0.5072 g/mL = 492.9 mL, then ÷ 236.588 = 2.08 cups.
- Measure 2 cups minus 1 tablespoon and you are within a few grams.
How to use it
- Type the amount the recipe gives you.
- Pick the unit you have and the unit you want.
- Choose an ingredient whenever the conversion crosses between volume and weight.
- Check the exact-factor row, then measure — by weight when precision matters.