Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Litres to US gallons
Convert L to US gal instantly, then review the formula, assumptions, and rounding guidance.
VolumeInstant result
Decimals
Formula result = input × 1 ÷ 3.785411784. 1 L = 0.2642 US gal
Common examples
One value, several units
Millilitres1,000 mL
Cubic metres0.001 m³
Cubic centimetres1,000 cm³
US gallons0.2642 US gal
Imperial gallons0.22 imp gal
US quarts1.0567 qt
US cups4.2268 cup
US fluid ounces33.814 fl oz
Conversion table
| L | US gal |
|---|---|
| 1 L | 0.2642 US gal |
| 2 L | 0.5283 US gal |
| 5 L | 1.3209 US gal |
| 10 L | 2.6417 US gal |
| 25 L | 6.6043 US gal |
| 50 L | 13.2086 US gal |
| 100 L | 26.4172 US gal |
Conversion chart
1 L0.2642 US gal
5 L1.3209 US gal
10 L2.6417 US gal
25 L6.6043 US gal
50 L13.2086 US gal
Worked example
1 litre equals 1,000 millilitres.
Unit definition
Litres (L) One litres equals 1 litre.
Unit history
Litres is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert L to litre.
3. Convert the base value to US gal and apply your display precision.
Understand the result before using it
Litres to US gallons converts a value measured in Litres (L) into the equivalent value in US gallons (US gal). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1 ÷ 3.785411784
Assumptions
- Litres and US gallons represent the same volume quantity.
- The input is expressed in L; the output is expressed in US gal.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 L = 0.264172052358 US gal. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a L measurement in a document that expects US gal.
- Compare a litres value with a value reported in us gallons.
- Check the L-to-US gal arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- US gallons and imperial gallons are different units; select the one your source actually uses.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Litres to US gallons?
result = input × 1 ÷ 3.785411784 Using the displayed relationship, 1 L equals 0.264172052358 US gal.
How many US gallons are in one Litres?
One Litres is 0.264172052358 US gallons. The displayed digits may be rounded.
Can I reverse the L to US gal conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts US gal back to L.
Is the Litres to US gallons result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.