CONVERSIONS / VOLUME

Volume converter

Convert between litres, millilitres, cubic metres, cups, spoons, fluid ounces, pints and gallons, with US and UK measures kept separate.

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YOUR RESULT

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WORKED EXAMPLE

Volume converter: a worked example

With value 1, from US gallons (US gal), to Litres (L), the 1 us gal equals is 3.785411784 L.

Inputs
Value1
FromUS gallons (US gal)
ToLitres (L)
Results
1 US gal equals3.785411784 L
Millilitres3,785.411784 mL
Cubic metres0.003785411784 m³
US teaspoons768 US tsp
US tablespoons256 US tbsp
US fluid ounces128 US fl oz
US cups16 US cup
THE METHOD

How it works

Pick the unit you have and the unit you want. US and UK (imperial) measures share names but not sizes: a UK pint is about 20% bigger than a US pint, and a UK gallon is about 20% bigger than a US gallon. Cooking cups and spoons here are US customary measures.

FormulaResult = value × (size of the starting unit in litres) ÷ (size of the target unit in litres). 1 US gallon = 3.785411784 L; 1 UK gallon = 4.54609 L.
ASSUMPTIONS

Assumptions and limits

  • Results are estimates based on the inputs and assumptions on this page, not professional advice.
  • Try this: use “Save scenario A”, change one input and compare the two results side by side.
SOURCES

Official sources

QUESTIONS

Frequently asked questions

How is the result of the “Volume converter” calculated?

Result = value × (size of the starting unit in litres) ÷ (size of the target unit in litres). 1 US gallon = 3.785411784 L; 1 UK gallon = 4.54609 L. Pick the unit you have and the unit you want. US and UK (imperial) measures share names but not sizes: a UK pint is about 20% bigger than a US pint, and a UK gallon is about 20% bigger than a US gallon. Cooking cups and spoons here are US customary measures.

What does the worked example show?

With value 1, from US gallons (US gal), to Litres (L), the 1 us gal equals is 3.785411784 L. Millilitres: 3,785.411784 mL; Cubic metres: 0.003785411784 m³; US teaspoons: 768 US tsp; US tablespoons: 256 US tbsp; US fluid ounces: 128 US fl oz; US cups: 16 US cup.

What assumptions and limits apply?

This is an estimate based on the inputs and assumptions shown on this page, not professional advice. Check anything with financial, health or safety consequences independently.

Is my data private?

Yes. Calculations run in your browser and your numbers are not sent to a server. A share link contains the inputs you choose to share, so check it before sending it to anyone.

Is a UK gallon the same as a US gallon?

No. A UK (imperial) gallon is 4.54609 litres and a US gallon is 3.785411784 litres, so the UK gallon is about 20% larger. Pints and fluid ounces also differ.

How many millilitres are in a cup?

A US cup is about 236.6 mL. Some recipes use a 250 mL metric cup instead.

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