{"success":true,"version":"v1","request":{"tool":"get_calculator_schema","calculator_id":"cooking-converter"},"result":{"entity_type":"calculator","id":"cooking-converter","calculator_id":"cooking-converter","canonical_url":"https://tttkmbb.com/food/cooking-converter","name":"Cooking Measurement Converter","title":"Cooking Measurement Converter – Teaspoons, Tablespoons, Cups, Fluid Ounces, Pints, Quarts and Millilitres","category":"food","category_name":"Food & Cooking","tool_name":"convert_cooking_measurement","featured_mcp_tool":false,"description":"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.","use_when":"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.","inputs":[{"name":"value","label":"Amount","type":"number","required":true,"min":0,"max":1000000,"description":"Quantity to convert, in from_unit.","example":2},{"name":"from_unit","label":"From unit","type":"enum","required":true,"values":[{"value":"tsp","label":"Teaspoon (US, 4.93 ml)","aliases":["teaspoon","teaspoons","t"]},{"value":"tbsp","label":"Tablespoon (US, 14.79 ml)","aliases":["tablespoon","tablespoons","T"]},{"value":"fl_oz_us","label":"Fluid ounce (US, 29.57 ml)","aliases":["fl oz","floz","fluid ounce","fluid ounces"]},{"value":"cup_us","label":"Cup (US, 236.59 ml)","aliases":["cup","cups"]},{"value":"cup_metric","label":"Cup (metric, 250 ml)","aliases":["metric cup"]},{"value":"ml","label":"Millilitre","aliases":["milliliter","millilitre","cc"]},{"value":"l","label":"Litre","aliases":["liter","litre"]},{"value":"pint_us","label":"Pint (US liquid, 473.18 ml)","aliases":["pint","pt"]},{"value":"quart_us","label":"Quart (US liquid, 946.35 ml)","aliases":["quart","qt"]}],"description":"Unit of the input amount.","example":"cup_us"},{"name":"to_unit","label":"To unit","type":"enum","required":true,"values":[{"value":"tsp","label":"Teaspoon (US, 4.93 ml)","aliases":["teaspoon","teaspoons","t"]},{"value":"tbsp","label":"Tablespoon (US, 14.79 ml)","aliases":["tablespoon","tablespoons","T"]},{"value":"fl_oz_us","label":"Fluid ounce (US, 29.57 ml)","aliases":["fl oz","floz","fluid ounce","fluid ounces"]},{"value":"cup_us","label":"Cup (US, 236.59 ml)","aliases":["cup","cups"]},{"value":"cup_metric","label":"Cup (metric, 250 ml)","aliases":["metric cup"]},{"value":"ml","label":"Millilitre","aliases":["milliliter","millilitre","cc"]},{"value":"l","label":"Litre","aliases":["liter","litre"]},{"value":"pint_us","label":"Pint (US liquid, 473.18 ml)","aliases":["pint","pt"]},{"value":"quart_us","label":"Quart (US liquid, 946.35 ml)","aliases":["quart","qt"]}],"description":"Unit to convert into.","example":"ml"}],"outputs":[{"name":"result","label":"Converted amount","type":"number","decimals":4,"description":"Amount expressed in to_unit."},{"name":"value_ml","label":"Amount in millilitres","type":"number","unit":"ml","decimals":3,"description":"Input amount converted to millilitres (intermediate step)."},{"name":"conversion_factor","label":"Factor","type":"number","decimals":6,"description":"Number of to_unit in one from_unit."}],"input_schema":{"type":"object","properties":{"value":{"description":"Quantity to convert, in from_unit.","type":"number","minimum":0,"maximum":1000000,"examples":[2]},"from_unit":{"description":"Unit of the input amount.","type":"string","enum":["tsp","tbsp","fl_oz_us","cup_us","cup_metric","ml","l","pint_us","quart_us"],"examples":["cup_us"]},"to_unit":{"description":"Unit to convert into.","type":"string","enum":["tsp","tbsp","fl_oz_us","cup_us","cup_metric","ml","l","pint_us","quart_us"],"examples":["ml"]}},"additionalProperties":false,"required":["value","from_unit","to_unit"]},"output_schema":{"type":"object","properties":{"result":{"description":"Amount expressed in to_unit.","type":"number"},"value_ml":{"description":"Input amount converted to millilitres (intermediate step). Unit: ml.","type":"number","x-unit":"ml"},"conversion_factor":{"description":"Number of to_unit in one from_unit.","type":"number"}}},"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","method":"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 %.","sources":[{"name":"NIST Special Publication 811 – Guide for the Use of the SI (Appendix B: US customary volume units in litres)","url":"https://www.nist.gov/pml/special-publication-811","type":"standard","retrieved_at":"2026-09-23"},{"name":"NIST – Metric Kitchen: cooking measurement equivalencies (rounded 5 / 15 / 30 / 240 ml values)","url":"https://www.nist.gov/pml/owm/metric-si/metric-kitchen/metric-kitchen-cooking-measurement-equivalencies","type":"government","retrieved_at":"2026-09-23"}],"freshness":{"type":"static","max_age_seconds":null,"note":"Deterministic formula with fixed constants; results never go stale. Inputs supplied by the caller determine the output."},"examples":[{"name":"2 US cups to ml","inputs":{"value":2,"from_unit":"cup_us","to_unit":"ml"},"expected":{"result":473.1765,"value_ml":473.176,"conversion_factor":236.588237},"url":"https://tttkmbb.com/api/v1/calculate/cooking-converter?value=2&from_unit=cup_us&to_unit=ml"},{"name":"3 tablespoons to teaspoons","inputs":{"value":3,"from_unit":"tbsp","to_unit":"tsp"},"expected":{"result":9,"conversion_factor":3},"url":"https://tttkmbb.com/api/v1/calculate/cooking-converter?value=3&from_unit=tbsp&to_unit=tsp"}],"faq":[{"q":"Is a UK or Australian cup the same?","a":"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."},{"q":"How do I convert cups to grams?","a":"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)."}],"tags":["cooking conversion","cups to ml","tablespoons to teaspoons","fluid ounces to ml","kitchen measurements"],"related":[{"calculator_id":"recipe-scaler","reason":"Scale the recipe before or after converting units."},{"calculator_id":"cooking-measurements","reason":"Full unit-conversion tool including weights."}],"links":{"html":"https://tttkmbb.com/food/cooking-converter","markdown":"https://tttkmbb.com/food/cooking-converter.md","json":"https://tttkmbb.com/food/cooking-converter.json","api":"https://tttkmbb.com/api/v1/calculate/cooking-converter","schema":"https://tttkmbb.com/api/v1/calculators/cooking-converter","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp"},"version":"v1","updated_at":"2026-09-23"},"timestamp":"2026-09-23T23:32:26Z"}