Litres to Gallons Converter (L to gal)

How to use this calculator: liters to gallons

1. 1Enter the value measured in litre (L).
2. 2Confirm the direction is Litre (L) to Gallon (US) (gal); reversing the units changes the factor or offset.
3. 3Apply gal = L × 0.26417218. The live converter performs this substitution as you type.
4. 4Read the answer in gal and keep only justified precision.

Conversion formula

One US gallon equals 3.785411784 litres, so litres convert to gallons by dividing by 3.78541. Use it for fuel, tank capacity and shipping volumes between metric and US measurements.

The units measure the same quantity at different scales: 1 L = 0.26417218 gal, and 1 gal = 3.78541 L.

Worked conversion example: Litres to Gallons

1. Given: 20 L
2. Substitute: gal = 20 × 0.26417218 = 5.28344354
3. Result: 20 L = 5.28344354 gal

Accuracy checklist

The converter keeps extra precision internally. Report only the precision supported by the original measurement and follow the required rounding rule.

Direction check: a smaller unit usually gives a larger number; temperature is an exception.

Unit definitions and SI traceability: NIST Office of Weights and Measures — SI Units.