/convert/imperial-gallons-to-us-gallons/ Convert Imperial gallons to US gallons instantly with a reference conversion table. article Imperial gallons to US gallons Converter — 247QuickTools
💧 Volume

Imperial gallons to US gallons Converter

Convert Imperial gallons to US gallons instantly with a reference conversion table.

Quick answer: To convert Imperial gallons to US gallons, multiply by 1.20095. For example, 1 Imperial gallons = 1.20095 US gallons. Use the calculator below for any value.
Imperial gallons to US gallons
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Common conversions
Imperial gallons US gallons
Formula:

How to convert Imperial gallons to US gallons

1

Enter your value

Type the number of imperial gallons you want to convert into the left box. The result in us gallons appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — US gallons to Imperial gallons. Your current value carries across so you don't have to re-enter anything.

3

About Imperial gallons and US gallons

Imperial gallons and US gallons are common volume measurements.

📊 Common conversions at a glance
Imperial gallons US gallons
1 1.201
2 2.402
5 6.005
10 12.01
20 24.02
50 60.05
Reviewed for 2026. Imperial gallons ↔ US gallons conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.

Frequently asked questions

How do I convert Imperial gallons to US gallons?

To convert Imperial gallons to US gallons, multiply by 1.20095. Or use the calculator above for instant results.

How many US gallons are in 1 Imperial gallons?

1 Imperial gallons equals 1.20095 US gallons.

Is the Imperial gallons to US gallons converter free?

Yes, the Imperial gallons to US gallons converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.