Milliliters to Gallons
An instant milliliters-to-gallons converter, with the formula and a reference table below.
| Milliliters | Gallons |
|---|---|
| 1 mL | 0.000264 gal |
| 2 mL | 0.000528 gal |
| 3 mL | 0.000793 gal |
| 5 mL | 0.001321 gal |
| 10 mL | 0.002642 gal |
| 25 mL | 0.006604 gal |
| 50 mL | 0.013209 gal |
| 100 mL | 0.026417 gal |
How to use
- Enter a value in the Milliliters field.
- The Gallons figure appears immediately — no button to press.
- Typing in the Gallons field converts back to Milliliters the same way.
- Use the reference table for the values that come up most often.
Milliliters to Gallons formula
Converting milliliters to gallons is a single multiplication by 0.000264172052.
gal = mL × 0.000264172052
Why this factor: the milliliter and the gallon are both defined against the liter, so dividing one definition by the other gives 0.000264172052 directly. Both definitions are set out in full below.
To go the other way, divide by 0.000264172052 — or use the Gallons to Milliliters converter, which is the same calculation reversed.
Worked example
Take 50 mL and multiply by the factor 0.000264172052: the result is 0.013209 gal.
50 mL × 0.000264172052 = 0.013209 gal
The converter above does this for any value you type, in either direction.
What is a milliliter?
A milliliter is one thousandth of a liter, and is exactly the same volume as a cubic centimeter.
Definition: Exactly 0.001 liter, which is exactly 1 cm³.
Where it is used: Medicine doses, cosmetics, recipe quantities, and laboratory work.
Worth knowing: 1 mL = 1 cm³ = 1 cc exactly, so these three units are interchangeable.
What is a gallon?
A US liquid gallon is the standard large-volume unit in the United States.
Definition: Defined as exactly 231 cubic inches, which works out to exactly 3.785411784 liters.
Where it is used: Fuel sales, milk and beverage containers, and paint in the US.
Worth knowing: The imperial gallon used in the UK and Canada is about 20% larger, at 4.54609 L — so 'miles per gallon' figures are not comparable between the two.
Milliliters vs Gallons
The milliliter is a metric unit while the gallon is a US customary unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many gallons are in a milliliter?
One milliliter equals 0.000264172052 gallons.
What is the formula to convert milliliters to gallons?
Multiply the number of milliliters by 0.000264172052. To reverse it, divide by 0.000264172052 instead.
How do I convert gallons back to milliliters?
Divide by 0.000264172052, which is the same as multiplying by 3785.41178.
How many gallons are in 10 milliliters?
10 mL works out to 0.002642 gal.
Is there anything to watch out for with milliliters?
1 mL = 1 cm³ = 1 cc exactly, so these three units are interchangeable.
How is the milliliter defined?
Exactly 0.001 liter, which is exactly 1 cm³.