Convert 1 gal to l
1 US gallon = 3.785412 liters
Sumwise · Checked by Theo Abbott · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How we check it
How to convert US gallons to liters
- Formula:
liters = US gallons × 3.785412 - Put in the value: 1 US gallon.
- Result: 3.785412 liters.
US gallons to liters table
| US gallons | liters |
|---|---|
| 1 gal | 3.785412 l |
| 2 gal | 7.570824 l |
| 5 gal | 18.927059 l |
| 10 gal | 37.854118 l |
| 20 gal | 75.708236 l |
| 50 gal | 189.270589 l |
| 100 gal | 378.541178 l |
| 500 gal | 1,892.71 l |
| 1,000 gal | 3,785.41 l |
Converting the other way: liters to US gallons
US gallons = liters × 0.26417205. So 3.785412 liters is back to 1 US gallon; one liter is 0.26417205 US gallons. See the liters to US gallons table.
Quick estimate in your head
For a rough answer, multiply by about 3.8: 1 × 3.8 ≈ 3.8 l, against the exact 3.785412 l (0.4% out). Good enough to check that a calculated result is sensible.
Common mistakes
The usual slip is using the factor the wrong way round. A US gallon is bigger than a liter, so the number of liters must come out larger than the number of US gallons. If your answer goes the other way, divide instead of multiplying.
About the units
US gallon (gal) and liter (l) are both units of volume. One US gallon equals 3.785412 liters, and one liter equals 0.26417205 US gallons. Results on this page are rounded for display; the conversion itself uses the exact definitions.
Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.
1 US gallon in other units
The most readable unit for this amount is US gallons (1).
How answers are calculated and checked: methodology.
Questions
How many liters are in 1 US gallon?
3.785412 liters.
What is the formula to convert US gallons to liters?
liters = US gallons × 3.785412
How many liters are in one US gallon?
One US gallon is 3.785412 liters, so multiply any number of US gallons by 3.785412.
Is 1 gal more than 1 l?
Yes. 1 US gallon is 3.785412 liters, which is more than 1 liter.
How do I convert US gallons to liters in a spreadsheet?
Put the number of US gallons in A1 and type =A1*3.785412 in the next cell. Fill the formula down to convert a whole column.