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Liters ↔ US Gallons
Forward divides liters by 3.785411784. Reverse multiplies US gallons by that exact factor.
Limitation: US liquid gallon only—not the UK imperial gallon (~4.546 L).
How to Convert Liters and US Gallons
Choose direction and enter a non-negative volume. Labels show US liquid gallons explicitly.
Choose liters → US gallons or reverse.
US vs imperial
UK imperial gallons are larger. This worksheet never uses imperial gallons.
What the Volume Means
Forward divides liters by 3.785411784. Reverse multiplies US gallons by that exact factor.
Worked Examples
10 L to US gal
Inputs
Result
10 ÷ 3.785411784.
1 US gal to L
Inputs
Result
Exact US gallon definition.
Check the other direction
Flip to reverse and paste the output to confirm you land back near the original value.
Frequently Asked Questions
Still have questions about this calculation?
Try the CalculatorConversion Formulas
Documented exact or standard factors with reverse mode.
Formula
L → US gal
L ÷ 3.785411784
US gal → L
gal × 3.785411784
Scientific Background
Assumptions: US liquid gallon = 231 in³ = 3.785411784 L. Limitations: no dry gallons; no imperial gallons.
Sources & review
Liters to Gallons Calculator documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.
Last reviewed
August 2, 2026
Reference
nist.gov
https://www.nist.gov/pml/owm/si-units-volumeFree Calculator Hub methodology
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/methodology
See our methodology and corrections policy.