US gallon to imperial gallon converter (gal to impgal)

Conversion Formula

1 gal = 0.832674 impgal

Step-by-Step Explanation

1. Understand the base relationship:
   1 US Gallon = 0.003785 cubic meters
   1 Imperial Gallon = 0.004546 cubic meters
2. Establish the conversion factor:
   1 gal = (0.003785 m³) / (0.004546 m³/impgal) = 0.832674 impgal
3. Apply the conversion:
   Multiply the value in gal by 0.832674 to get the equivalent in impgal

Example Conversion

Convert 5 gal to impgal:

5 gal × 0.832674 = 4.163 impgal