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Gallon (UK) to Liter

Convert gallon (gal) to liter (L) — with the exact factor, a quick-reference table and a free converter that works offline.

1 gal = 4.54609 L

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Conversion table

Gallon (gal)Liter (L)
1 gal4.54609 L
2 gal9.09218 L
5 gal22.73045 L
10 gal45.4609 L
20 gal90.9218 L
50 gal227.3045 L
100 gal454.609 L
500 gal2,273.045 L

How the conversion works

Both units measure volume. One gallon equals exactly 4.54609 L, so multiply by that factor to convert. UK (imperial) gallon. ~20% larger than the US gallon.

FAQ

How many liters in a gallon?

1 gal = 4.54609 L.

How do I convert gallon to liter?

Multiply the gallon value by 4.54609. For example, 10 gal × 4.54609 = 45.4609 L.

Where does the factor come from?

The conversion factor is defined in NIST SP 811; both units are volume units converted through liter.

Related conversions

Liter to Gallon (UK) Cup (US) to Milliliter Milliliter to Cup (US) Gallon (US) to Liter

Conversion factors: NIST SP 811. Computed by the same engine that powers the app.

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