Imperial Gallons to Liters Converter
Quick answer: To convert Imperial Gallons to liters, multiply by 4.54609. For example, 10 imp gal is 45.4609 L. One imperial gallon equals 4.54609 L.
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Use the Imperial Gallons to Liters Converter
Imperial Gallons to Liters formula and what each symbol means
L = imp gal × 4.54609
| Symbol | Meaning |
|---|---|
| imp gal | Imperial gallon |
| L | Liter |
Imperial Gallons to Liters examples
1 imp gal
1 imp gal × 4.54609 = 4.54609 L.
10 imp gal
10 imp gal × 4.54609 = 45.4609 L.
100 imp gal
100 imp gal × 4.54609 = 454.609 L.
Imperial Gallons compared with Liters
One imp gal is 4.546 times as large as one L, so your number gets bigger when you convert Imperial Gallons to liters and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About Imperial Gallons and liters
Imperial gallon (imp gal): The imperial (UK) gallon, exactly 4.54609 litres. Liter (L): A cubic decimetre, accepted for use with the SI.
Where Imperial Gallons to liters conversions are used
Tanks, pools and shipping containers are specified in cubic metres or cubic feet. Cooking and baking move between millilitres, cups, tablespoons and fluid ounces.
How to calculate Imperial Gallons to Liters step by step
- Enter the value in imp gal (the starting unit).
- Multiply by 4.54609, because 1 imp gal = 4.54609 L.
- The product is the value in L. To go back, divide by 4.54609 or multiply by 0.2199692.
Popular volume conversions
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How to read your Imperial Gallons to Liters result
Quick estimate: multiply by about 4.5 to get liters from Imperial Gallons; this is within 1.1% of the exact factor. The US gallon is exactly 3.785411784 litres and the imperial gallon is exactly 4.54609 litres, about 20% bigger.
| IMPERIAL GALLONS | LITERS |
|---|---|
| 1 | 4.54609 |
| 2 | 9.09218 |
| 5 | 22.73045 |
| 10 | 45.4609 |
| 20 | 90.9218 |
| 50 | 227.3045 |
| 100 | 454.609 |
| 1,000 | 4,546.09 |
Liters to Imperial Gallons: quick table
| LITERS | IMPERIAL GALLONS |
|---|---|
| 1 | 0.2199692 |
| 5 | 1.099846 |
| 10 | 2.199692 |
| 25 | 5.499231 |
| 50 | 10.99846 |
| 100 | 21.99692 |
| 250 | 54.99231 |
| 500 | 109.9846 |
Common mistakes when calculating Imperial Gallons to Liters
- Mixing liquid and dry measures: a US dry quart is not the same size as a US liquid quart.
- Dividing when you should multiply: from imp gal to L multiply by 4.54609; from L to imp gal divide by 4.54609.
Imperial Gallons to Liters FAQ
How many L are in 1 imp gal?
1 imp gal equals 4.54609 L.
How many imp gal are in 1 L?
1 L equals 0.2199692 imp gal.
Is 1 imp gal = 4.54609 L an exact conversion?
Yes. The imperial gallon and the liter are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 4.54609 is just that ratio shown to 7 significant figures.
What is a liter (L)?
A cubic decimetre, accepted for use with the SI.
How can I estimate Imperial Gallons to liters in my head?
Quick estimate: multiply by about 4.5 to get liters from Imperial Gallons; this is within 1.1% of the exact factor.
What is 500 imp gal in liters?
500 imp gal = 2,273.045 L (since 500 × 4.54609).
What is 15 imp gal in liters?
15 imp gal = 68.19135 L (since 15 × 4.54609).
What is 75 imp gal in liters?
75 imp gal = 340.9568 L (since 75 × 4.54609).
How many decimals should I keep when converting imp gal to L?
Match the precision of your original measurement. For example, 45.4609 L rounds to 45.5 L at 3 significant figures; keep more digits only for engineering or scientific work.
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, NIST Handbook 44, Appendix C: units and systems of measurement