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Ounces to ML Converter
Convert US fluid ounces to milliliters instantly, with the formula and a quick reference table.
ML to Gallons Converter
Convert milliliters to US gallons as you type. Type in either box, or switch to any other volume unit.
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About milliliters 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 milliliters (mL) 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 = mL ÷ 3,785.411784
1 mL = 0.000264172 gal
1 gal = 3,785.411784 mL
Both units are defined in litres: 1 milliliter = 0.001 litre, and 1 US gallon = 3.785411784 litre. Dividing one by the other gives the factor above.
Worked example
To convert 12 mL: 12 × 0.000264172 = 0.00317 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.
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ml to gallons
Milliliters to US gallons conversion table
| mL | gal |
|---|---|
| 1 mL | 0.000264 gal |
| 2 mL | 0.000528 gal |
| 3 mL | 0.000793 gal |
| 4 mL | 0.001057 gal |
| 5 mL | 0.001321 gal |
| 6 mL | 0.001585 gal |
| 7 mL | 0.001849 gal |
| 8 mL | 0.002113 gal |
| 9 mL | 0.002378 gal |
| 10 mL | 0.002642 gal |
| 12 mL | 0.00317 gal |
| 15 mL | 0.003963 gal |
| 20 mL | 0.005283 gal |
| mL | gal |
|---|---|
| 25 mL | 0.006604 gal |
| 30 mL | 0.007925 gal |
| 40 mL | 0.010567 gal |
| 50 mL | 0.013209 gal |
| 60 mL | 0.01585 gal |
| 70 mL | 0.018492 gal |
| 75 mL | 0.019813 gal |
| 80 mL | 0.021134 gal |
| 90 mL | 0.023775 gal |
| 100 mL | 0.026417 gal |
| 250 mL | 0.066043 gal |
| 500 mL | 0.132086 gal |
| 1,000 mL | 0.264172 gal |
How to convert by hand
- Take the value in milliliters.
- Multiply it by 0.000264172.
- 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 milliliter?
1 mL = 0.000264 gal.
How do I convert milliliters to US gallons?
Multiply by 0.000264172 (or divide by 3,785.411784). Example: 10 mL = 0.002642 gal.
How do I convert US gallons back to milliliters?
Divide by 0.000264172. 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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