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⚡ US Gallons to Imperial Gallons: the quick answer
1 gal = 0.832674 gal-uk
1 US gallon equals 0.832674 imperial gallons
To convert US gallons to imperial gallons, multiply the value by 0.832674.
To go the other way, multiply imperial gallons by 1.20095 to get US gallons.
↔ Convert imperial gallons to US gallons instead
🧮 Formula
Every unit here is defined by its volume in cubic meters, so the conversion factor is (cubic meters per US gallon) ÷ (cubic meters per imperial gallon).
📊 US Gallons to Imperial Gallons conversion table
✏️ Worked examples
Convert 25 US gallons to imperial gallons
25 gal × 0.832674 = 20.8169 gal-uk
Try this example →
Convert 250 US gallons to imperial gallons
250 gal × 0.832674 = 208.169 gal-uk
Try this example →
📘 About these units
US gallon (gal). The US liquid gallon is 231 cubic inches, exactly 3.785411784 liters.
Imperial gallon (gal-uk). The imperial gallon is exactly 4.54609 liters, used in the UK and in some Commonwealth countries.
❓ Frequently asked questions
How many imperial gallons are in one US gallon?
There are 0.832674 imperial gallons in one US gallon.
How do I convert US gallons to imperial gallons?
Multiply the number of US gallons by 0.832674. For example, 10 US gallons equal 8.32674 imperial gallons.
How many US gallons are in one imperial gallon?
One imperial gallon equals 1.20095 US gallons.
🔗 More volume conversions
All volume units →