Convert gallon (imperial)s to gallon (us)s
1 gal (imp) = 1.2009499255 gal — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
How to convert gallon (imperial)s to gallon (us)s
Multiply the number of gallon (imperial)s by 1.2009499255 to get gallon (us)s.
Gallon (imperial): Exactly 4.546 09 L — the volume of 10 lb of water at 62 °F.
Gallon (US): The US liquid gallon: 231 in³ exactly. About 17% smaller than the imperial gallon.
Gallon (imperial) to Gallon (US) conversion table
| Gallon (imperial)s (gal (imp)) | Gallon (US)s (gal) |
|---|---|
| 1 gal (imp) | 1.200 949 9 |
| 2 gal (imp) | 2.401 899 9 |
| 3 gal (imp) | 3.602 849 8 |
| 5 gal (imp) | 6.004 749 6 |
| 10 gal (imp) | 12.009 499 |
| 20 gal (imp) | 24.018 999 |
| 25 gal (imp) | 30.023 748 |
| 50 gal (imp) | 60.047 496 |
| 100 gal (imp) | 120.094 99 |
| 250 gal (imp) | 300.237 48 |
| 500 gal (imp) | 600.474 96 |
| 1000 gal (imp) | 1200.9499 |
Gallon (US) to Gallon (imperial) conversion table
| Gallon (US)s (gal) | Gallon (imperial)s (gal (imp)) |
|---|---|
| 1 gal | 0.832 674 18 |
| 2 gal | 1.665 348 4 |
| 3 gal | 2.498 022 6 |
| 5 gal | 4.163 370 9 |
| 10 gal | 8.326 741 8 |
| 20 gal | 16.653 484 |
| 25 gal | 20.816 855 |
| 50 gal | 41.633 709 |
| 100 gal | 83.267 418 |
| 250 gal | 208.168 55 |
| 500 gal | 416.337 09 |
| 1000 gal | 832.674 18 |
Frequently asked
How many gallon (us)s are in a gallon (imperial)?
One gallon (imperial) equals 1.200949926 gallon (us)s (gal (imp) → gal). That figure is exact, not rounded.
How do you convert gallon (imperial)s to gallon (us)s?
Multiply the number of gallon (imperial)s by 1.2009499255 to get gallon (us)s.
What is 1 gal in gallon (imperial)s?
One gallon (us) is 0.8326741846 gallon (imperial)s.
What is 10 gal (imp) in gal?
10 gal (imp) = 12.009 499 gal.
What exactly is a gallon (imperial)?
Exactly 4.546 09 L — the volume of 10 lb of water at 62 °F.
What exactly is a gallon (us)?
The US liquid gallon: 231 in³ exactly. About 17% smaller than the imperial gallon.