How to convert gallons to liters
Gallons and Liters both measure volume, so converting is a single multiplication. One gal equals 3.78541 L, so you multiply your gallons value by 3.78541.
Formula: liters = gallons × 3.78541. For example, 10 gal = 37.8541 L.
Gallons to Liters conversion table
| Gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.78541 |
| 2 | 7.57082 |
| 5 | 18.92705 |
| 10 | 37.8541 |
| 25 | 94.63525 |
| 50 | 189.2705 |
| 100 | 378.541 |
| 1,000 | 3,785.41 |
Gallons and Liters explained
Gallons (gal): A US liquid measure of about 3.785 litres (four quarts).
Liters (L): The metric unit of volume, used for drinks, fuel and containers.
When you'd convert gallons to liters
You'll convert gallons to liters whenever a measurement is given in one unit but you need it in the other — comparing gallons and liters figures across regions, following a recipe or spec, or double-checking a number. Because 1 gal is exactly 3.78541 L, the result is precise every time.
Frequently asked questions
How many liters are in a gallon?
One gal equals 3.78541 L. Multiply your gallons figure by 3.78541 to get liters.
What is the formula to convert gallons to liters?
liters = gallons × 3.78541. The factor 3.78541 is exact.
What is 2 gallons in liters?
2 gal = 7.57082 L. You can enter any value in the converter above to get an instant result.
Is this Gallons to Liters converter accurate?
Yes. It uses the standard conversion factor (1 gal = 3.78541 L) defined by NIST Handbook 44 / US customary liquid measures, so results are exact to several decimal places.