Cooking Measurement Converter
Convert between cups, tablespoons, teaspoons, millilitres and fluid ounces.
Last updated · View algorithm, constants and default inputs (JSON)
US cups (cups)
About this calculator
This converter uses US customary volume units: US cups, tablespoons, teaspoons, fluid ounces, pints, quarts and gallons. Millilitres and litres are metric. Other countries may define recipe measures differently; check the recipe’s unit system.
Worked example
calculated with the default values below
Amount 1 · From US cups US cups 1.0000 cups · US tablespoons 16.000 tbsp · US teaspoons 48.00 tsp · Millilitres 236.59 ml · US fluid ounces 8.000 fl oz
General background references
Disclaimer
These calculators give general cooking guidance. Ingredient density, oven calibration, altitude and equipment all vary, and safe minimum internal temperatures always take precedence over timings. Follow the food-safety advice issued by your national authority.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
V_ml = V × k
- V
- value in the source unit
- k
- source unit to ml factor
- V_ml
- amount in millilitres
US customary constants: US cup 236.588 mL, tablespoon 14.7868 mL, teaspoon 4.9289 mL, US fluid ounce 29.5735 mL. Metric cup is 250 mL.
Frequently asked questions
Which cup and spoon definitions are used?
The US customary units use 1 US cup = 236.588 mL, 1 US tablespoon = 14.7868 mL, and 1 US teaspoon = 4.9289 mL. A metric cup is 250 mL, so choose the unit system that matches your recipe.
Why are three teaspoons exactly one tablespoon here?
The converter works entirely in millilitres and converts every unit through the same table, where a teaspoon is 4.9289 ml and a tablespoon is 14.7868 ml, so three teaspoons equal one tablespoon by construction. A cup is 236.588 ml, which is sixteen tablespoons, and a gallon is 3,785.4 ml. Because everything routes through millilitres, switching the From field never loses precision the way stacking many small units by hand would.