Imperial Gallons to Milliliters Converter
1 imperial gallon = 4,546.09 milliliters
1 imperial gallon equals 4,546.09 milliliters
How to convert imperial gallons to milliliters
Choose the named US, Imperial or metric unit before converting a recipe or container size. A US liquid gallon is 3.785411784 L; an Imperial gallon is 4.54609 L. Volume alone cannot give ingredient mass without density.
mL = imp gal × 4546.09One imperial gallon is 4546.09 milliliters, so a single multiplication converts any value.
45,460.9 mL = 10 × 4546.09Imperial gallons to milliliters conversion table
Common values in imperial gallons, converted to milliliters.
| Imperial gallons (imp gal) | Milliliters (mL) |
|---|---|
| 1 | 4,546.09 |
| 2 | 9,092.18 |
| 3 | 13,638.27 |
| 4 | 18,184.36 |
| 5 | 22,730.45 |
| 10 | 45,460.9 |
| 20 | 90,921.8 |
| 25 | 113,652.25 |
| 50 | 227,304.5 |
| 100 | 454,609 |
| 250 | 1,136,522.5 |
| 500 | 2,273,045 |
| 1,000 | 4,546,090 |
About these units
imperial gallonimp gal
The UK gallon: exactly 4.54609 litres.
Reference: UK Weights and Measures Act 1985.
millilitermL
One thousandth of a litre, exactly equal to one cubic centimetre.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.