US gallons to imperial gallons
1 US gallon in imperial gallons
1 gal = 0.83267 imp gal
imp gal = gal × 0.8326741846
To convert US gallons to imperial gallons, multiply by 0.8326741846. The table below gives the values people look up most often, and the converter works for any number.
US gallons to imperial gallons table
| US gallons | Imperial gallons |
|---|---|
| 1 gal | 0.83267 |
| 2 gal | 1.665348 |
| 3 gal | 2.498023 |
| 4 gal | 3.330697 |
| 5 gal | 4.163371 |
| 10 gal | 8.326742 |
| 15 gal | 12.49011 |
| 20 gal | 16.65348 |
| 25 gal | 20.81685 |
| 30 gal | 24.98023 |
| 40 gal | 33.30697 |
| 50 gal | 41.63371 |
| 75 gal | 62.45056 |
| 100 gal | 83.26742 |
| 250 gal | 208.1685 |
| 500 gal | 416.3371 |
| 1,000 gal | 832.6742 |
How the conversion works
The relationship is imp gal = gal × 0.8326741846. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.
US gallon: US liquid gallon. The imperial gallon is about 20% larger.
Imperial gallon: UK gallon.
Common questions
- How many imperial gallons are in one US gallon?
- One US gallon equals 0.83267 imperial gallons. imp gal = gal × 0.8326741846.
- How do you convert US gallons to imperial gallons?
- Use imp gal = gal × 0.8326741846. So 10 gal is 8.326742 imp gal.
- How many US gallons are in one imperial gallon?
- One imperial gallon equals 1.20095 US gallons, which is the reverse of the conversion above.
- Is there more than one kind of US gallon?
- US liquid gallon. The imperial gallon is about 20% larger. UK gallon.
Related pages
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place