How do I convert US Gallons to Liters?
Use the formula L = US gal × 3.78541. Enter any US gal value and CalcuNimble calculates L instantly.
Convert US Gallons to Liters
Use this US gal to L converter for fast everyday calculations, quick reference values, and the exact formula behind the result.
US Gallons to Liters Converter
Convert US Gallons (US gal) to Liters (L) instantly.
Gallons to Liters: imperial liquid volume in metric terms
When you encounter a measurement in gallons and need it in liters, this conversion handles fuel, beverages, paint, and any large liquid volume.
Formula
The formula is L = gal × 3.78541. Multiply the gallon value by 3.78541 to get liters.
Worked example
5 gallons of paint = 5 × 3.78541 = 18.93 liters. This helps when buying paint in one measurement system but applying it with tools calibrated in the other.
Common Reference Values
| US Gallons | Liters | Context |
|---|---|---|
| 1.0 US gal | 3.79 L | 1 US gal |
| 5.0 US gal | 18.93 L | 5 US gal |
| 10 US gal | 37.85 L | 10 US gal |
Practical guidance
Paint and coatings
Paint is often sold by the gallon, but coverage rates may be given in liters per square meter. Converting before purchasing prevents buying too much or too little.
Beverages and brewing
Home brewers and winemakers work with recipes in both systems. A 5-gallon batch is 18.93 liters — an important number when scaling recipes or choosing fermenters.
Mistake: using 3.8 and losing precision
Rounding to 3.8 is common but introduces a 0.4% error. For 100 gallons, that is 1.5 liters of discrepancy. Use 3.78541 for accuracy.
Frequently asked questions
What is the US gal to L formula?
L = US gal × 3.78541
Can I use decimals for US gal to L?
Yes. The converter supports decimal input and shows up to 6 decimal places for accurate daily use.
When is US gal to L conversion commonly used?
Useful for cooking, drinks, and liquid measurement conversions.
How can I convert Liters back to US Gallons?
Use the swap button in the converter card or open L to US gal at /convert/l-to-gal/.