Everyday calculator

Volume Converter

Choose the source volume and see its equivalent in another common unit.

Calculated privately on your device
No account. Formula and assumptions are shown below.

Calculator inputs

Volume converter details

Formula & disclaimer

Converted Volume = Input Volume × Source Unit in Litres ÷ Target Unit in Litres

View assumptions

Formula reviewCalcs at Hand Editorial TeamVerified 31 August 2026 · automated checks included

Three useful checks, kept deliberately short.

What this result includes

1 US gallon equals 3.785411784 litres.

A practical example

Convert one US gallon to litres: Select US gallons · Select litres · Apply the standard gallon definition.

Common input mistake

US and UK gallons are different and are listed separately.

Converted Volume = Input Volume × Source Unit in Litres ÷ Target Unit in Litres

Litres are used as the internal reference unit.

Keep in mind: Packaging and kitchen tools may use rounded nominal capacities.

Produced byCalcs at Hand Editorial Team

Last formula check31 August 2026

Review methodKnown examples + boundary cases