How to Convert Millilitres to US gallons (ml to gal)
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres. This guide shows how to convert millilitres into us gallons by hand, with examples and a quick-reference table.
The conversion
To convert millilitres to us gallons, multiply the value by 0.0002641722. To go the other way, divide by the same number (or multiply by 3,785.41). Because the factor is tiny, scientific notation keeps the numbers manageable.
US gallons = millilitres × 0.0002641722
Worked examples
- 3 ml = 0.000793 gal
- 12.5 ml = 0.003302 gal
- 75 ml = 0.019813 gal
Millilitres to US gallons table
| Millilitres | US gallons |
|---|---|
| 1 ml | 0.000264 gal |
| 2 ml | 0.000528 gal |
| 5 ml | 0.001321 gal |
| 10 ml | 0.002642 gal |
| 20 ml | 0.005283 gal |
| 25 ml | 0.006604 gal |
| 50 ml | 0.013209 gal |
| 100 ml | 0.026417 gal |
| 250 ml | 0.066043 gal |
| 500 ml | 0.132086 gal |
| 1,000 ml | 0.264172 gal |
Common questions
Is ml to gal exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the US gallons to Millilitres converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Background
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For any value, use the Millilitres to US gallons Converter or browse all volume converters.
Run your own numbers: Millilitres to US gallons Converter