How many milliliters are in 1 imperial gallon?

1 imperial gallon equals 4546.09 mL.

How do I convert milliliters back to imperial gallons?

Use the reverse converter: 1 milliliter equals 0.000219969 imp gal.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert imperial gallons to milliliters, multiply the value by 4546.09.

mL = imp gal × 4546.09

Convert 5 imp gal to mL:

5 imp gal × 4546.09 = 22730.5 mL

Imperial Gallon (imp gal): The UK imperial gallon, defined in 1824 and now exactly 4.54609 litres. Still seen in UK fuel economy figures.
Milliliter (mL): Used for liquids, medicine and recipes in metric countries. One thousandth of a litre, equal to one cubic centimetre.

How do I convert imperial gallons to milliliters?: To convert imperial gallons to milliliters, multiply the value by 4546.09.
How many milliliters are in 1 imperial gallon?: 1 imperial gallon equals 4546.09 mL.
How many milliliters are in 10 imperial gallons?: 10 imp gal equals 45460.9 mL.
How do I convert milliliters back to imperial gallons?: Use the reverse converter: 1 milliliter equals 0.000219969 imp gal.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.