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1 US gallon to liters

1 US gallon = 3.78541 liters

Rounded to a practical precision: 3.79 L.

How the calculation works

One US gallon is 3.78541 liters, so:

1 gal × 3.78541 = 3.78541 L

Reversing it, 3.78541 liters ÷ 3.78541 returns 1 US gallons.

Nearby values

US GallonsLiters
0.5 gal1.89271 L
1 gal3.78541 L
1.5 gal5.67812 L
2 gal7.57082 L
2.5 gal9.46353 L
3 gal11.35624 L

About these units

US gallon (gal) — A US liquid gallon is exactly 3.785411784 litres, or 128 fluid ounces.

Liter (L) — A litre is one cubic decimetre, the metric unit for beverages, fuel and everyday liquid volume.

Frequently asked questions

How many liters is 1 US gallon?

1 US gallon is 3.78541 liters.

How do I convert US gallons to liters myself?

Multiply by 3.78541. To go back, divide by 3.78541 — or multiply by 0.264172.

Is this figure exact?

The conversion factor between the US gallon and the liter is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full US gallons to liters converter · All volume converters