Liters to Gallons Converter

About the l to gal calculation

One liter is exactly 0.264172 gallons, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The metric volume standard — one litre is exactly 1,000 cm³. The US gallon is 3.785 L. The imperial gallon is 4.546 L — a 20% difference.

Formula

gal = L × 0.264172

1 L = 0.264172 gal
1 gal = 3.7854 L

Worked example

To convert 2 L, multiply by 0.264172: 2 × 0.264172 = 0.528344 gal.

Frequently asked questions

How many gallons are in a liter?

There are 0.264172 gallons in one liter. To convert any amount, multiply the number of liters by 0.264172.

How do I convert gallons back to liters?

Divide instead of multiplying, or equivalently multiply by 3.7854. One gallon is 3.7854 liters.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between liters and gallons is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Is there anything that catches people out here?

This gives US gallons. If you need imperial gallons, divide by 4.546 instead of 3.785 — the two differ by about 20%.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units