Liters to Gallons Converter (US Gallons)
Convert liters to US gallons in one step. The result is always in US gallons (not imperial gallons), with the formula, examples and a quick-reference table below.
US Gallons = Liters × 0.2641720524
Liters to US Gallons Formula
One US gallon is exactly 3.785411784 liters, so liters × 0.2641720524 gives US gallons (the same as dividing by 3.785411784). To convert US gallons to liters, multiply by 3.785411784. This page uses the US gallon. The imperial (UK) gallon is larger, at 4.54609 liters.
About Liters and US Gallons
A liter is one cubic decimeter, or 1,000 cubic centimeters, and is the common volume unit in metric countries. A US gallon is a US customary unit defined as 231 cubic inches, which equals exactly 3.785411784 liters. The UK imperial gallon is a different, larger unit, so always check which gallon is meant.
How to Convert Liters to US Gallons
- Enter the volume in liters. Decimals such as 2.5 are fine.
- The answer in US gallons appears instantly, or press Convert Now. Imperial gallons are shown as a side value.
- Use Swap Units to convert US gallons to liters, Copy Result to copy the answer, or Clear to start again.
By hand: multiply the liters by 0.26417 (or divide by 3.785). A quick estimate is to divide by 4 and add a little: 20 L is roughly 5 + 0.3 = 5.3 US gal (exact: 5.283441). Volume cannot be negative, so only zero and positive values are accepted.
Practical Examples
- Fuel tank: a 45 L tank holds 11.887742 US gal, and a 60 L tank holds 15.850323 US gal.
- Petrol purchase: 30 L is 7.925162 US gal.
- Water bottle: a 1.5 L bottle is 0.396258 US gal.
- Aquarium: a 100 L tank is 26.417205 US gal.
- Milk: 3.785 L is almost exactly 1 US gal.
Liters to US Gallons – Common Values
Quick reference for frequently used conversions
| Liters (L) | US Gallons (gal) | Imperial Gallons |
|---|---|---|
| 0.5 L | 0.132086 US gal | 0.109985 imp gal |
| 1 L | 0.264172 US gal | 0.219969 imp gal |
| 2 L | 0.528344 US gal | 0.439938 imp gal |
| 3.785411784 L | 1 US gal | 0.832674 imp gal |
| 5 L | 1.32086 US gal | 1.099846 imp gal |
| 10 L | 2.641721 US gal | 2.199692 imp gal |
| 15 L | 3.962581 US gal | 3.299539 imp gal |
| 20 L | 5.283441 US gal | 4.399385 imp gal |
| 25 L | 6.604301 US gal | 5.499231 imp gal |
| 30 L | 7.925162 US gal | 6.599077 imp gal |
| 40 L | 10.566882 US gal | 8.79877 imp gal |
| 50 L | 13.208603 US gal | 10.998462 imp gal |
| 60 L | 15.850323 US gal | 13.198155 imp gal |
| 75 L | 19.812904 US gal | 16.497694 imp gal |
| 100 L | 26.417205 US gal | 21.996925 imp gal |
| 200 L | 52.83441 US gal | 43.99385 imp gal |
Where and Why This Conversion Is Used
Liters are the standard volume unit in most countries, while the United States sells fuel, milk and paint by the gallon. Converting correctly matters because the US and imperial gallons are different sizes.
- Fuel and driving: tank capacities and fuel purchases abroad, and comparing litres per 100 km with US miles per gallon (mpg = 235.215 ÷ L/100 km).
- Home and garden: paint, water tanks, pools and fertiliser are sold in either unit.
- Food and drink: milk, juice and cooking liquids in recipes.
- Aquariums and pets: tank sizes and water-change volumes.
- Industry and shipping: tank, drum and chemical volumes are quoted in liters or gallons.
For other conversions see KM to Miles and MPH to KPH.