Convert Imperial gallons to US fluid ounces
1 imp gal = 153.72 fl oz. Change the amount below, or read the formula and the reference table further down.
1 Imperial gallon equals
US fluid ounces
1 imp gal = 153.72 fl oz
The formula
Imperial gallons and US fluid ounces both measure volume from the same zero, so a single multiplier does the job.
fl oz = imp gal × 153.72
Going the other way? Convert US fluid ounces to Imperial gallons.
Imperial gallons to US fluid ounces table
Common values, rounded for reading.
| Imperial gallons (imp gal) | US fluid ounces (fl oz) |
|---|---|
| 1 | 153.72 |
| 2 | 307.44 |
| 3 | 461.16 |
| 4 | 614.89 |
| 5 | 768.61 |
| 6 | 922.33 |
| 7 | 1,076.05 |
| 8 | 1,229.77 |
| 9 | 1,383.49 |
| 10 | 1,537.22 |
| 15 | 2,305.82 |
| 20 | 3,074.43 |
| 25 | 3,843.04 |
| 30 | 4,611.65 |
| 40 | 6,148.86 |
| 50 | 7,686.08 |
| 75 | 11,529.12 |
| 100 | 15,372.16 |
| 250 | 38,430.4 |
| 500 | 76,860.8 |
| 1,000 | 153,721.59 |
Questions people ask
- How many US fluid ounces are in a Imperial gallon?
- One Imperial gallon equals 153.72 US fluid ounces.
- How do I convert Imperial gallons to US fluid ounces by hand?
- Multiply the number of Imperial gallons by 153.72. For a rough check, 153.72 is close enough for most everyday use.
- What is 1 Imperial gallon in US fluid ounces?
- 1 Imperial gallon is 153.72 US fluid ounces.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.