EngiRef / Volume conversion
Convert Gallons (US) to Milliliters (gal to mL)
1 gal = 3785.41178 mL. Convert gallons (US) to milliliters with the exact factor, a common-values table and a free converter.
Conversion factor
mL = gal × 3785.41178
1 gal = 3785.41178 mL
Multiply by 3785.41178 mL to go from gallons (US) to milliliters, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
gal to mL table
| Gallons (US) (gal) | Milliliters (mL) |
|---|---|
| 1 gal | 3785.41178 mL |
| 2 gal | 7570.82357 mL |
| 5 gal | 18927.0589 mL |
| 10 gal | 37854.1178 mL |
| 20 gal | 75708.2357 mL |
| 50 gal | 189270.589 mL |
| 100 gal | 378541.178 mL |
Every figure is computed at build time by the site’s own converter from the volume unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many milliliters are in one gallon (US)?
One gallon (US) is 3785.41178 mL, so 100 gal is 378541.178 mL.
What is the formula to convert gallons (US) to milliliters?
mL = gal × 3785.41178. Multiply the value in gallons (US) by 3785.41178 to get milliliters.
How do I convert milliliters back to gallons (US)?
gal = mL × 0.000264172052, so 1 mL is 0.000264172052 gal. The mL to gal page carries the same table in that direction.