Imperial gallons to liters
Type a value in imperial gallons to see it in liters straight away, or type in the second box to convert back.
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How to use it
- Type the value in the imperial gallons box.
- Read the result in liters as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
L = gal (imp) × 4.54609
Multiply the value in imperial gallons by 4.54609 to get liters.
Example
To convert 25 gal (imp) to liters: 25 × 4.54609 = 113.652 L.
Conversion table
| Imperial gallons (gal (imp)) | Liters (L) |
|---|---|
| 1 | 4.54609 |
| 2 | 9.09218 |
| 3 | 13.6383 |
| 5 | 22.7305 |
| 10 | 45.4609 |
| 20 | 90.9218 |
| 25 | 113.652 |
| 50 | 227.305 |
| 100 | 454.609 |
| 250 | 1,136.52 |
| 500 | 2,273.05 |
| 1,000 | 4,546.09 |
About the units
- Imperial gallon
- The imperial (UK) gallon is defined by UK law as exactly 4.54609 liters.
- Liter
- The liter is a special name for the cubic decimeter and equals exactly 0.001 cubic meters.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many liters are in one imperial gallon?
1 gal (imp) = 4.54609 L exactly.
How do I convert imperial gallons to liters?
Use L = gal (imp) × 4.54609. For example, 25 gal (imp) = 113.652 L.
How many imperial gallons are in one liter?
1 L = 0.219969 gal (imp).
What is the difference between a US gallon and an imperial gallon?
A US gallon is 3.785411784 liters and the imperial gallon used in the UK is 4.54609 liters, about 20% larger. Check where a figure comes from before converting, since US sources mean the US gallon.
How many milliliters are in a cup?
The US customary cup used in recipes is 236.5882365 mL and the metric cup is 250 mL. US nutrition labels round the cup to 240 mL, so the figure differs slightly between sources.