VOLUME CONVERSION
Imperial gallon to Liter.
Convert imperial gallon (gal (UK)) to liter (L), with the math explained.
1 gal (UK) = 4.54609 L
US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
THE MATH, MADE SIMPLE
How to convert imperial gallon to liter
Multiply your imperial gallon value by 4.54609 to get the equivalent in liter. Both units are normalized through the liter.
L = gal (UK) × 4.5460910 gal (UK) = 45.4609 L
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
QUICK REFERENCE
gal (UK) to L conversion table
| Imperial gallon (gal (UK)) | Liter (L) |
|---|---|
| 1 gal (UK) | 4.54609 L |
| 2 gal (UK) | 9.09218 L |
| 5 gal (UK) | 22.73045 L |
| 10 gal (UK) | 45.4609 L |
| 20 gal (UK) | 90.9218 L |
| 50 gal (UK) | 227.3045 L |
| 100 gal (UK) | 454.609 L |
| 500 gal (UK) | 2,273.045 L |
| 1,000 gal (UK) | 4,546.09 L |
About the imperial gallon
The imperial gallon (gal (UK)) is a unit of volume. One imperial gallon equals 4.54609 liter (base unit) in this calculator.
All imperial gallon conversionsAbout the liter
The liter (L) is a unit of volume. One liter equals 1 liter (base unit) in this calculator.
All liter conversionsCommon questions
What is 1 gal (UK) in L?
One imperial gallon equals 4.54609 L. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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