Liters to Gallons Converter - Free Online

About Liters → Gallons

Convert liters to US gallons instantly with this free liters to gallons converter.Ideal for fuel economy, liquid shipping labels, and kitchen measures when you need gallons from metric volume.

CalculatorCamp converts liters to the gallon types shown on the form.

Direction liters to gallons.

How to use this tool

Enter liters. Select gallon type if prompted. Calculate for gallons.

Formula & methodology

This liters to gallons converter - free online applies the standard relationship below. Intermediate values are kept at full precision; only the displayed result is rounded.

1 US gal = 3.785411784 L; 1 UK imp gal = 4.54609 L

Tips for accurate results

• Always note US vs UK gallon on fuel economy comparisons.
• Reverse: gallons-to-liters.
• Do not confuse gallon with gallon dry measure.
• Mixing oil ratios uses volume—convert consistently.

Frequently asked questions

Sources & references

The factors and formulas used by this tool follow these references:

• NIST Special Publication 811 — Guide for the Use of the International System of Units (SI)
• BIPM — The International System of Units (SI Brochure, 9th edition)

Last reviewed: October 2026. Found an error? Tell us and we will correct it.