Volume Converter

How Volume Converter works

Convert volume between millilitres, litres, cubic metres, teaspoons, cups, fluid ounces and gallons. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.

That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.

Litres as the anchor

Volume here is anchored on the litre, with one cubic metre at 1,000 L. US customary and metric cooking measures are both included, which is where the precision starts to matter: a US cup is 236.59 ml, a metric cup is 250 ml.

A US fluid ounce is 29.5735 ml and a US gallon is 3.785 L. The imperial gallon is 4.546 L — 20% larger — and using the US factor on UK fuel figures is a real error, not a rounding one.

Spoons are the least reliable unit

A US teaspoon is 4.93 ml and a metric teaspoon is 5 ml — a 1.5% difference that is invisible in soup and unacceptable in a medicine dose. Tablespoons have the same problem at three times the scale.

For anything measured in spoons, the recipe's country of origin is part of the unit. Baking by weight removes the ambiguity entirely.

Gallons, quarts and the rest

The US system divides a gallon into four quarts, eight pints or sixteen cups. The imperial system does the same but with a bigger gallon, so a UK pint is 568 ml while a US pint is 473 ml.

A “pint” in a pub is a legal measure in some countries, so the definition is not academic — it is regulated.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions