Imperial Gallons to Liters Converter
1 imperial gallon = 4.54609 liters
1 imperial gallon equals 4.54609 liters
How to convert imperial gallons to liters
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.
L = imp gal × 4.54609One imperial gallon is 4.54609 liters, so a single multiplication converts any value.
45.4609 L = 10 × 4.54609Imperial gallons to liters conversion table
Common values in imperial gallons, converted to liters.
| Imperial gallons (imp gal) | Liters (L) |
|---|---|
| 1 | 4.54609 |
| 2 | 9.09218 |
| 3 | 13.63827 |
| 4 | 18.18436 |
| 5 | 22.73045 |
| 10 | 45.4609 |
| 20 | 90.9218 |
| 25 | 113.65225 |
| 50 | 227.3045 |
| 100 | 454.609 |
| 250 | 1,136.5225 |
| 500 | 2,273.045 |
| 1,000 | 4,546.09 |
About these units
imperial gallonimp gal
The UK gallon: exactly 4.54609 litres.
Reference: UK Weights and Measures Act 1985.
literL
Exactly one cubic decimetre, or 1,000 cm³. The everyday metric volume unit.
Reference: BIPM, non-SI units accepted for use with the SI.
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.