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Gallons to liters

1 gallon = 3.785 liters

For any other value: L = gal × 3.785411784

Calculator

3.785 L

Type a number. You can leave the unit in: 100 gal is fine.

gallons to liters, compared on the same scale 0510152025 018.9337.8556.7875.7194.64 gal L
On the same scale: 5 gal is 18.93 L, and 25 gal is 94.64 L.

Gallons to liters chart

The values people look up most.

Gallons to liters: the values people look up most
gallons US gallons Imperial (UK)
1 gal 3.785 L 4.546 L
5 gal 18.927 L 22.73 L
2 gal 7.571 L 9.092 L
3 gal 11.356 L 13.638 L
2.5 gal 9.464 L 11.365 L
1.5 gal 5.678 L 6.819 L
10 gal 37.854 L 45.461 L
4 gal 15.142 L 18.184 L
20 gal 75.708 L 90.922 L
13 gal 49.21 L 59.099 L
12 gal 45.425 L 54.553 L
15 gal 56.781 L 68.191 L
30 gal 113.562 L 136.383 L
55 gal 208.198 L 250.035 L
6 gal 22.712 L 27.277 L
16 gal 60.567 L 72.737 L
14 gal 52.996 L 63.645 L
50 gal 189.271 L 227.305 L
8 gal 30.283 L 36.369 L
40 gal 151.416 L 181.844 L
0.5 gal 1.893 L 2.273 L
11 gal 41.64 L 50.007 L
18 gal 68.137 L 81.83 L
100 gal 378.541 L 454.609 L
24 gal 90.85 L 109.106 L
7 gal 26.498 L 31.823 L
25 gal 94.635 L 113.652 L
17 gal 64.352 L 77.284 L
9 gal 34.069 L 40.915 L
26 gal 98.421 L 118.198 L

Formula

L = gal × 3.785411784

US or imperial gallons?

A US gallon is 3.785 L and an imperial gallon is 4.546 L — a 20% difference. This page uses US gallons. The chart shows both.

Where this number comes from

This factor is exact, not rounded. A US gallon is exactly 3.785411784 L; an imperial gallon is exactly 4.54609 L.

Source: NIST Guide to the SI, Appendix B: Conversion Factors, NIST (National Institute of Standards and Technology, USA).

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