Convert Imperial Gallon to Liter
Use this free converter to change imperial gallons (imp gal) into liters (L). Imperial gallon and liter both measure volume. As a quick reference, 1 imp gal equals 4.54609 L, and 1 L equals 0.21996925 imp gal.
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Liter (L)
4.54609
1 imp gal = 4.54609 L
Volume conversion table
| Imperial Gallon | Liter |
|---|---|
| 0.01 | 0.0454609 |
| 0.1 | 0.454609 |
| 0.5 | 2.273045 |
| 1 | 4.54609 |
| 2 | 9.09218 |
| 3 | 13.63827 |
| 5 | 22.73045 |
| 10 | 45.4609 |
| 20 | 90.9218 |
| 25 | 113.65225 |
| 50 | 227.3045 |
| 100 | 454.609 |
| 1,000 | 4546.09 |
How to convert Imperial Gallon to Liter
Multiply the imperial gallon value by 4.54609 to get liters.
- Enter the number of imperial gallons you want to convert.
- The converter instantly shows the equivalent value in liters.
- Worked example: 15 imp gal × 4.54609 = 68.19135 L.
- Use the swap button to reverse the conversion (liter to imperial gallon).
About these units
Imperial Gallon (imp gal)
- Definition
- An imperial gallon (imp gal) equals about 4.546 liters, roughly 20% larger than the US gallon.
- History
- It was defined in the UK in 1824 as the volume of ten pounds of water at a set temperature.
- Current use
- Imperial gallons are still used in the UK and some Commonwealth countries, often for fuel economy.
Liter (L)
- Definition
- A liter (L) is a metric unit of volume equal to one cubic decimeter, or 1,000 cubic centimeters.
- History
- Introduced in France in 1795, the liter was tied to the kilogram via the volume of one kilogram of water.
- Current use
- Liters measure beverages, fuel, and engine displacement across the metric world.
Frequently asked questions
How many liters are in a imperial gallon?
There are 4.54609 L in 1 imp gal. To convert, multiply the number of imperial gallons by 4.54609.
How do I convert imperial gallons to liters?
Multiply the imperial gallon value by 4.54609 to get liters. For example, 10 imp gal = 45.4609 L.
Is this imperial gallon-to-liter converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Imperial Gallon to other volume units
| Unit | 1 Imperial Gallon equals |
|---|---|
| Liter (L) | 4.54609 L |
| Milliliter (mL) | 4546.09 mL |
| Cubic Meter (m³) | 0.00454609 m³ |
| Cubic Centimeter (cm³) | 4546.09 cm³ |
| US Gallon (gal) | 1.2009499 gal |
| US Quart (qt) | 4.8037997 qt |
| US Pint (pt) | 9.6075994 pt |
| US Cup (cup) | 19.215199 cup |
| US Fluid Ounce (fl oz) | 153.72159 fl oz |
| Tablespoon (tbsp) | 307.44318 tbsp |
| Teaspoon (tsp) | 922.32954 tsp |