US fluid ounces to imperial gallons
imperial gallons = US fluid ounces × 0.00650527
Reverse: imperial gallons to US fluid ounces
How to convert US fluid ounces to imperial gallons
One US fluid ounce is 0.00650527 imperial gallons, so multiply the number of US fluid ounces by 0.00650527. For example, 20 US fluid ounces is 20 × 0.00650527 = 0.13010534 imperial gallons. To go back, divide by the same number, or multiply by 153.72159.
Quick estimate
Multiplying by about 0.007 gets within 7.6% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.
| US fluid ounces | imperial gallons |
|---|---|
| 1 floz | 0.00650527 impgal |
| 2 floz | 0.01301053 impgal |
| 3 floz | 0.0195158 impgal |
| 4 floz | 0.02602107 impgal |
| 5 floz | 0.03252634 impgal |
| 6 floz | 0.0390316 impgal |
| 7 floz | 0.04553687 impgal |
| 8 floz | 0.05204214 impgal |
| 9 floz | 0.0585474 impgal |
| 10 floz | 0.06505267 impgal |
| 11 floz | 0.07155794 impgal |
| 12 floz | 0.0780632 impgal |
| 13 floz | 0.08456847 impgal |
| 14 floz | 0.09107374 impgal |
| 15 floz | 0.09757901 impgal |
| 16 floz | 0.10408427 impgal |
| 17 floz | 0.11058954 impgal |
| 18 floz | 0.11709481 impgal |
| 19 floz | 0.12360007 impgal |
| 20 floz | 0.13010534 impgal |
| 25 floz | 0.16263168 impgal |
| 30 floz | 0.19515801 impgal |
| 40 floz | 0.26021068 impgal |
| 50 floz | 0.32526335 impgal |
| 60 floz | 0.39031602 impgal |
| 70 floz | 0.45536869 impgal |
| 75 floz | 0.48789503 impgal |
| 80 floz | 0.52042137 impgal |
| 90 floz | 0.58547404 impgal |
| 100 floz | 0.65052671 impgal |
| 120 floz | 0.78063205 impgal |
| 150 floz | 0.97579006 impgal |
| 200 floz | 1.301053 impgal |
| 250 floz | 1.626317 impgal |
| 300 floz | 1.95158 impgal |
| 400 floz | 2.602107 impgal |
| 500 floz | 3.252634 impgal |
| 750 floz | 4.87895 impgal |
| 1,000 floz | 6.505267 impgal |
| 1,500 floz | 9.757901 impgal |
| 2,000 floz | 13.010534 impgal |
| 5,000 floz | 32.526335 impgal |
| 10,000 floz | 65.052671 impgal |
Questions
How many imperial gallons are in a US fluid ounce?
0.00650527 imperial gallons.
How do I convert US fluid ounces to imperial gallons in a spreadsheet?
Put the value in A1 and type =A1*0.00650527, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.