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Ounces to ML Converter
Convert US fluid ounces to milliliters instantly, with the formula and a quick reference table.
Liters to Gallons Converter
Convert liters to US gallons as you type. Type in either box, or switch to any other volume unit.
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About liters and US gallons
Volume units are everywhere in cooking, drinks, fuel and medicine. US recipes use cups, tablespoons and fluid ounces; most of the world uses millilitres and litres.
This converter changes liters (L) into US gallons (gal) instantly. You can also type in the second box to convert backwards, or pick any other volume unit from the menus.
Formula
gal = L ÷ 3.785411784
1 L = 0.264172052 gal
1 gal = 3.785411784 L
Both units are defined in litres: 1 liter = 1 litre, and 1 US gallon = 3.785411784 litre. Dividing one by the other gives the factor above.
Worked example
To convert 12 L: 12 × 0.264172052 = 3.170065 gal.
Notes and assumptions
Uses US customary units. A metric cup is 250 mL and a UK (imperial) gallon is 4.54609 L, so results differ if your recipe or spec uses those.
Popular searches
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Liters to US gallons conversion table
| L | gal |
|---|---|
| 1 L | 0.264172 gal |
| 2 L | 0.528344 gal |
| 3 L | 0.792516 gal |
| 4 L | 1.056688 gal |
| 5 L | 1.32086 gal |
| 6 L | 1.585032 gal |
| 7 L | 1.849204 gal |
| 8 L | 2.113376 gal |
| 9 L | 2.377548 gal |
| 10 L | 2.641721 gal |
| 12 L | 3.170065 gal |
| 15 L | 3.962581 gal |
| 20 L | 5.283441 gal |
| L | gal |
|---|---|
| 25 L | 6.604301 gal |
| 30 L | 7.925162 gal |
| 40 L | 10.56688 gal |
| 50 L | 13.2086 gal |
| 60 L | 15.85032 gal |
| 70 L | 18.49204 gal |
| 75 L | 19.8129 gal |
| 80 L | 21.13376 gal |
| 90 L | 23.77548 gal |
| 100 L | 26.41721 gal |
| 250 L | 66.04301 gal |
| 500 L | 132.086 gal |
| 1,000 L | 264.1721 gal |
How to convert by hand
- Take the value in liters.
- Multiply it by 0.264172052.
- Round only at the end.
Common mistakes
- Mixing US and UK units. A UK pint (568 mL) is about 20% bigger than a US pint (473 mL).
- Treating fluid ounces (volume) and ounces (weight) as the same thing. They only match for water-like liquids.
- Using a metric cup (250 mL) recipe with a US cup (236.6 mL) measure. The gap is small but adds up in baking.
Sources
- Unit definitions and exact conversion factors: NIST Special Publication 811, Guide for the Use of the International System of Units (SI).
Frequently asked questions
How many US gallons are in one liter?
1 L = 0.264172 gal.
How do I convert liters to US gallons?
Multiply by 0.264172052 (or divide by 3.785411784). Example: 10 L = 2.641721 gal.
How do I convert US gallons back to liters?
Divide by 0.264172052. Press the swap button in the converter.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
See our methodology and editorial policy. Think something’s off? Report an error with this tool.
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