Gallons (US) to Litres Converter
Enter gallons (US) to get litres instantly. Works both ways.
How to convert US gallons to litres
To convert gallons (US) to litres, multiply by 3.78541. For example, 5 US gallons × 3.78541 = 18.9271 litres.
Need it the other way? Convert litres to gallons (US).
Gallons (US) to Litres at a glance
- 1 gallon (US) = 3.785412 litres
- 5 gallons (US) = 18.92706 litres
- 10 gallons (US) = 37.85412 litres
- 50 gallons (US) = 189.2706 litres
- 100 gallons (US) = 378.5412 litres
- 1 litre = 0.2641721 gallons (US) (the reverse)
Worked examples
25 gallons (US) × 3.785412 = 94.63529 litres.
250 gallons (US) × 3.785412 = 946.3529 litres.
1,500 gallons (US) × 3.785412 = 5,678.118 litres.
Converting back
To go from litres back to gallons (US), divide by 3.785412 (or multiply by 0.2641721). For example, 100 litres ÷ 3.785412 = 26.41721 gallons (US).
Using a rounded factor
For a quick estimate you can use 3.8 in place of 3.785412. That is accurate to within about 0.4%, which is fine for rough checks but not for exact work.
US gallons to litres chart
| Gallons (US) | Litres |
|---|---|
| 0.1 US gallons | 0.378541 litres |
| 0.25 US gallons | 0.946353 litres |
| 0.5 US gallons | 1.89271 litres |
| 1 US gallons | 3.78541 litres |
| 2 US gallons | 7.57082 litres |
| 3 US gallons | 11.3562 litres |
| 4 US gallons | 15.1416 litres |
| 5 US gallons | 18.9271 litres |
| 6 US gallons | 22.7125 litres |
| 7 US gallons | 26.4979 litres |
| 8 US gallons | 30.2833 litres |
| 9 US gallons | 34.0687 litres |
| 10 US gallons | 37.8541 litres |
| 15 US gallons | 56.7812 litres |
| 20 US gallons | 75.7082 litres |
| 25 US gallons | 94.6353 litres |
| 30 US gallons | 113.562 litres |
| 40 US gallons | 151.416 litres |
| 50 US gallons | 189.271 litres |
| 75 US gallons | 283.906 litres |
| 100 US gallons | 378.541 litres |
| 250 US gallons | 946.353 litres |
| 500 US gallons | 1,892.71 litres |
| 1,000 US gallons | 3,785.41 litres |
More volume & liquids conversions
Frequently asked questions
How many litres are in one gallon (US)?
There are 3.78541 litres in one gallon (US).
How do I convert US gallons to litres?
Multiply the value in gallons (US) by 3.78541.
How many gallons (US) are in one litre?
There are 0.2641721 gallons (US) in one litre.
What is 10 gallons (US) in litres?
10 gallons (US) = 37.85412 litres.
How do I convert litres back to gallons (US)?
Divide the value in litres by 3.785412, or multiply it by 0.2641721.
Can I use a rounded factor for gallons (US) to litres?
For quick estimates, 3.8 is close (within about 0.4%). Use 3.785412 when you need the full figure.