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Cooking Measurement Converter

Converts a kitchen volume between US customary units (teaspoon, tablespoon, fluid ounce, cup, pint, quart), the 250 ml metric cup, millilitres and litres using the exact US definitions.

When to use

A recipe uses cups, tablespoons or fluid ounces and you need millilitres (or the reverse), or you need to switch between US and metric cups.

Do not use when: You need grams: converting volume to weight requires the ingredient's density (e.g. 1 US cup of flour ≈ 120 g but of water ≈ 237 g), which this calculator does not do.

Formula

result = value × ml_per(from_unit) / ml_per(to_unit); ml per unit: tsp 4.92892, tbsp 14.7868, fl oz 29.5735, US cup 236.588, metric cup 250, US pint 473.176, US quart 946.353, litre 1000

US customary units follow their legal definitions (1 US gallon = 3.785411784 L exactly, 1 cup = 1/16 gallon). Nutrition labels and many recipe sites use the rounded 5 ml / 15 ml / 30 ml / 240 ml values, which differ by up to 1.5 %.

Inputs

Parameter	Type	Required	Description
`value`	number	yes	Quantity to convert, in from_unit. Range: ≥ 0, ≤ 1000000
`from_unit`	enum: tsp \| tbsp \| fl_oz_us \| cup_us \| cup_metric \| ml \| l \| pint_us \| quart_us	yes	Unit of the input amount.
`to_unit`	enum: tsp \| tbsp \| fl_oz_us \| cup_us \| cup_metric \| ml \| l \| pint_us \| quart_us	yes	Unit to convert into.

Outputs

Output	Type	Unit	Description
`result`	number		Amount expressed in to_unit.
`value_ml`	number	ml	Input amount converted to millilitres (intermediate step).
`conversion_factor`	number		Number of to_unit in one from_unit.

Example

2 US cups to ml: {"value":2,"from_unit":"cup_us","to_unit":"ml"} → {"result":473.1765,"value_ml":473.176,"conversion_factor":236.588237}

3 tablespoons to teaspoons: {"value":3,"from_unit":"tbsp","to_unit":"tsp"} → {"result":9,"conversion_factor":3}

GET https://tttkmbb.com/api/v1/calculate/cooking-converter?value=2&from_unit=cup_us&to_unit=ml

Machine access

API: GET https://tttkmbb.com/api/v1/calculate/cooking-converter (query parameters) or POST with a JSON body {"inputs": {...}}
Schema: https://tttkmbb.com/api/v1/calculators/cooking-converter · Markdown: https://tttkmbb.com/food/cooking-converter.md · JSON definition: https://tttkmbb.com/food/cooking-converter.json
MCP: server https://tttkmbb.com/mcp, tool run_calculator with calculator_id="cooking-converter"
OpenAPI operationId: convert_cooking_measurement
Freshness: static. Authentication: none. Rate limit: fair use (see rate limits).

Sources

FAQ

Is a UK or Australian cup the same?

No. The metric cup (Australia, NZ, Canada) is 250 ml; the old imperial cup is 284 ml and the imperial fluid ounce 28.41 ml. Use cup_metric for 250 ml cups.

How do I convert cups to grams?

Multiply the millilitre amount by the ingredient's density in g/ml (water 1.0, sugar ≈ 0.85, all-purpose flour ≈ 0.51–0.55 depending on how it is scooped).

Related calculators

Recipe Scaler — Scale the recipe before or after converting units.
Cooking Measurement Converter — Full unit-conversion tool including weights.