US Gallons to UK Gallons Converter

Summary

A US liquid gallon equals 3.785411784 liters, while a UK (imperial) gallon equals 4.54609 liters — so one US gallon is about 0.8327 UK gallons. This converter handles both directions and displays the liters equivalent so you always have full context for the volume.

How it works

1. Enter a value in the US Gallons field — the UK Gallons result updates immediately.
2. Or enter a value in the UK Gallons field to convert in the reverse direction.
3. Both fields update the liters equivalent in real time.
4. Use the Swap button to flip the direction without retyping.
5. Click Reset to clear both fields and start over.

Use cases

• Compare fuel-tank sizes when reading US vs. UK vehicle specs.
• Convert recipe or drink volumes between American and British measurements.
• Calculate how much fluid fits in a container rated in imperial gallons.
• Cross-check shipping container volumes listed in different gallon standards.
• Understand pool or aquarium capacity reported in US or UK gallons.

Frequently Asked Questions