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Litres to Gallons Converter
Sign up to favourite this calculatorConvert litres (liters) to UK imperial gallons and US liquid gallons, or a gallon figure back again. Pick the unit you are starting from and get the other two.
UK imperial gallons
US liquid gallons
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Assumptions and limits
- An estimate from the numbers you entered, for guidance only. It is not financial, tax or medical advice.
- Calculator version 1, last updated 25 October 2026.
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How to use this calculator
Choose the unit you are starting from — Litres, Gallons (US) or Gallons (UK) — type the amount, and read the other two units straight away. Pick how many decimal places to show; the figures update as you type.
What do I need to enter?
- Convert from — Litres, Gallons (US) or Gallons (UK). The result shows the two units you did not choose.
- Amount to convert — the volume in that unit, from 0 to 10,000,000.
- Decimal places — 1, 2, 3 or 4, or Max for up to 10. It rounds the display only, not the conversion.
What do the results show?
- Main result — the converted volume in one unit: UK imperial gallons when you start from litres, otherwise litres.
- Second result — the same volume in the remaining unit, such as US liquid gallons when you start from litres.
- Litres per gallon — the exact factors used: 4.54609 litres per UK imperial gallon and 3.785411784 litres per US liquid gallon.
How to convert litres to gallons
Litre and liter are the same unit — British and American spellings — so this is also how you convert liters to gallons. A UK imperial gallon and a US liquid gallon hold different amounts, so litres convert to each one with its own factor. Divide by the litre capacity of the gallon you want:
UK imperial gallons = litres ÷ 4.54609
US liquid gallons = litres ÷ 3.785411784
- One UK imperial gallon is exactly 4.54609 litres.
- One US liquid gallon is exactly 3.785411784 litres.
Example: convert 50 litres
50 ÷ 4.54609 = 10.99846 UK imperial gallons
50 ÷ 3.785411784 = 13.20860 US liquid gallons
To go from gallons back to litres, multiply instead: US gallons × 3.785411784, or UK gallons × 4.54609. The Convert from toggle above the calculator does this for you.
Litres to gallons conversion table
Common litre (liter) amounts in both gallon types, rounded to 2 decimal places.
| Litres | UK imperial gallons | US liquid gallons |
|---|---|---|
| 1 L | 0.22 | 0.26 |
| 2 L | 0.44 | 0.53 |
| 5 L | 1.10 | 1.32 |
| 10 L | 2.20 | 2.64 |
| 20 L | 4.40 | 5.28 |
| 25 L | 5.50 | 6.60 |
| 30 L | 6.60 | 7.93 |
| 40 L | 8.80 | 10.57 |
| 50 L | 11.00 | 13.21 |
| 60 L | 13.20 | 15.85 |
| 75 L | 16.50 | 19.81 |
| 100 L | 22.00 | 26.42 |
| 150 L | 33.00 | 39.63 |
| 200 L | 43.99 | 52.83 |
| 500 L | 109.98 | 132.09 |
| 1,000 L | 219.97 | 264.17 |
UK gallons vs US gallons
A UK imperial gallon is larger than a US liquid gallon. One UK imperial gallon equals 4.54609 litres, while one US liquid gallon equals 3.785411784 litres — roughly a 20% difference. Always choose the correct gallon type when converting fuel, containers, recipes, liquids or bulk quantities, because using the wrong one gives an answer that is off by about a fifth. Converting fuel for a journey specifically? See the Fuel Cost Calculator, which handles UK and US MPG directly.
British spelling is litres and American spelling is liters; they are the same unit. This page uses the SI symbol L in the table so it reads the same either way.
Frequently asked questions
How do you convert liters to gallons?
Divide the number of liters by 3.785411784 to get US liquid gallons, or by 4.54609 to get UK imperial gallons. Liter and litre are the same unit, so the maths is identical either way.
Is a liter the same as a litre?
Yes. "Liter" is the American spelling and "litre" is the British spelling of the same metric unit. Every figure on this page is the same whichever spelling you use.
How many UK gallons are in one litre?
One litre equals approximately 0.21997 UK imperial gallons.
How many US gallons are in one litre?
One litre equals approximately 0.26417 US liquid gallons.
How many litres are in a UK gallon?
One UK imperial gallon equals 4.54609 litres.
How many litres are in a US gallon?
One US liquid gallon equals 3.785411784 litres.
Why are the UK and US gallon results different?
They are two different units. A UK imperial gallon is 4.54609 litres, while a US liquid gallon is 3.785411784 litres — about 20% smaller. Pick the gallon that matches your source: UK for British fuel economy and recipes, US for American ones.
Last updated 25 October 2026.