Imperial gallons to Litres
Convert imperial gallons to litres (imp gal to L). 1 imp gal = 4.54609 L. Use the calculator, formula and conversion table.
How to convert imperial gallons to litres
Multiply the amount in imperial gallons by 4.54609 to get litres. The displayed factor and results are rounded to 12 significant digits.
L = imp gal × 4.54609Worked example
1 imp gal = 4.54609 L. Change the amount in the calculator above to use your own value.
Units and assumptions
Units are labelled explicitly: US customary liquid cups and gallons differ from imperial units. One litre is 1,000 millilitres. This converts volume only; mass conversions need a density.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Imperial gallons to Litres table
| Imperial gallons (imp gal) | Litres (L) |
|---|---|
| 0 | 0 |
| 1 | 4.54609 |
| 5 | 22.73045 |
| 10 | 45.4609 |
| 25 | 113.65225 |
| 100 | 454.609 |
| 1,000 | 4,546.09 |
About this conversion
What is the formula for imperial gallons to litres?
L = imp gal × 4.54609. Multiply the amount in imperial gallons by 4.54609 to get litres. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to imperial gallons?
Use the litres to imperial gallons calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the volume converter to browse all supported pairs.