Liters to UK Gallons Converter (L to imp gal)
1 L ≈ 0.219969 UK gallons. Convert liters from British fuel receipts and tanks to imperial gallons for mpg, with liter and gallon charts.
UK Gallon (imp gal) = Liter (L) × 0.219969248299
Liter (L): The liter is the metric unit of volume accepted for use with the SI. Since 1964 it has been defined as exactly one cubic decimeter, which is 1,000 cubic centimeters.
UK Gallon (imp gal): The UK (imperial) gallon is defined as exactly 4.54609 liters, about 20% larger than the US gallon. It is still used for fuel economy figures in the UK.
| Liter (L) | UK Gallon (imp gal) |
|---|---|
| 1 | 0.219969248299 |
| 5 | 1.0998462415 |
| 10 | 2.19969248299 |
| 25 | 5.49923120748 |
| 50 | 10.998462415 |
| 100 | 21.9969248299 |
British pumps and receipts show fuel in liters, while car brochures, trip computers and drivers still talk in miles per imperial gallon. Converting the liters bought into UK gallons is the first step in working out real-world mpg: divide the miles driven since the last fill-up by the gallons. One liter is about 0.22 UK gallons, so a 45 L fill-up comes to just under 10 gallons.
The gallon here is the imperial gallon of exactly 4.54609 L, used in the UK and formerly in Canada and other Commonwealth countries. A US gallon is smaller, so a figure taken from an American source needs the liters to US gallons converter instead. Prices convert the other way: multiplying a price per liter by 4.54609 gives the price per imperial gallon that older comparisons quote.
How to use this tool
- Type a value in the Liter box to see it in UK gallons, or type in the UK Gallon box to convert the other way.
- Press ⇄ to swap the two units, or Load example for a typical value.
- Check the charts below for common values; for other units, open the Volume converter.
Formula
UK Gallon (imp gal) = Liter (L) × 0.219969248299
Liter (L) = UK Gallon (imp gal) × 4.54609
Both factors come from exact definitions: 1 uk gallon = 4.54609 liters and 1 liter = 0.219969248299 UK gallons (shown to 12 significant digits).
Example
Two conversions worked with the same factors the converter uses:
45 L × 0.219969248299 ≈ 9.89862 imp gal
12 imp gal × 4.54609 = 54.55308 L
Liter to UK Gallon chart
Common values from liters to UK gallons, rounded to four decimal places.
| Liter (L) | UK Gallon (imp gal) |
|---|---|
| 1 | 0.22 |
| 2 | 0.4399 |
| 3 | 0.6599 |
| 4 | 0.8799 |
| 5 | 1.0998 |
| 10 | 2.1997 |
| 15 | 3.2995 |
| 20 | 4.3994 |
| 25 | 5.4992 |
| 30 | 6.5991 |
| 35 | 7.6989 |
| 40 | 8.7988 |
| 45 | 9.8986 |
| 50 | 10.9985 |
| 55 | 12.0983 |
| 60 | 13.1982 |
| 65 | 14.298 |
| 70 | 15.3978 |
| 80 | 17.5975 |
| 90 | 19.7972 |
| 100 | 21.9969 |
| 1,000 | 219.9692 |
UK Gallon to Liter chart
The reverse direction for values people often look up.
| UK Gallon (imp gal) | Liter (L) |
|---|---|
| 0.5 | 2.273 |
| 1 | 4.5461 |
| 2 | 9.0922 |
| 3 | 13.6383 |
| 5 | 22.7305 |
| 7 | 31.8226 |
| 10 | 45.4609 |
| 11 | 50.007 |
| 13 | 59.0992 |
| 15 | 68.1914 |
| 20 | 90.9218 |
Liter amounts in British driving and home life
| Item | Liter (L) | UK Gallon (imp gal) |
|---|---|---|
| Jerry can, standard size | 20 | 4.3994 |
| Fill-up of a 35 L city-car tank | 35 | 7.6989 |
| Fill-up of a 50 L family-car tank | 50 | 10.9985 |
| Fill-up of a 70 L estate or SUV tank | 70 | 15.3978 |
| Water butt, common 100 L size | 100 | 21.9969 |
| Domestic heating oil tank, 1,000 L size | 1,000 | 219.9692 |
Quick mental estimate
Divide the liters by 4.5: 45 L → 10 gal. The exact answer is 9.9 gal, so the shortcut comes out about 1% high.
Use the converter or the charts when the exact figure matters.
The two units
Liter (L): The liter is the metric unit of volume accepted for use with the SI. Since 1964 it has been defined as exactly one cubic decimeter, which is 1,000 cubic centimeters.
UK Gallon (imp gal): The UK (imperial) gallon is defined as exactly 4.54609 liters, about 20% larger than the US gallon. It is still used for fuel economy figures in the UK.
Frequently asked questions
How do I work out my car's mpg from liters?
Divide the liters you put in by 4.54609 to get UK gallons, then divide the miles driven since the previous fill-up by that number. For example, 400 miles on 40 L gives 400 ÷ 8.80 ≈ 45.5 mpg.
Why is UK mpg higher than US mpg for the same car?
The imperial gallon holds about 20% more fuel than the US gallon, so a car goes further on one. A car rated at 40 US mpg achieves about 48 UK mpg.
How many gallons is a 20 L jerry can?
About 4.4 UK gallons, or about 5.3 US gallons. The 20 L size dates from the jerry cans used in the Second World War.
How precise is the result?
The converter uses the exact definitions above with browser floating-point arithmetic and shows up to 12 significant digits. The charts round to four decimal places for reading.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/liter-to-uk-gallon-converter/
Cite or embed this tool
kakaoCalc. (2026, November 8). Liters to UK Gallons Converter (L to imp gal). https://kakao.mobile/tools/liter-to-uk-gallon-converter/
“Liters to UK Gallons Converter (L to imp gal).” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/liter-to-uk-gallon-converter/.
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