This converter turns imperial fluid ounces into oil barrels instantly, using the exact factor 1 imperial fluid ounce = 0.0001787127865 oil barrels. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
The UK fluid ounce, about 4% smaller than its US counterpart. The petroleum barrel: 42 US gallons, the global oil trading unit.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
imperial fluid ounces- The amount you are converting, measured in imperial fluid ounces
0.0001787127865- The exact number of oil barrels in one imperial fluid ounce
oil barrels- The converted result
How it works, step by step
- Enter the number of imperial fluid ounces you want to convert.
- The value is multiplied by 0.0001787127865, the exact conversion factor.
- The result is displayed in oil barrels, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 imperial fluid ounces
Multiply 5 by 0.00017871279. That gives 0.000894 oil barrels. A quick sanity check: one imperial fluid ounce is smaller than one oil barrel, so the number should get smaller — and it does.
Converting 72 imperial fluid ounces
72 × 0.00017871279 = 0.012867 oil barrels. Working backwards, 0.012867 ÷ 0.00017871279 returns 72 imperial fluid ounces, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many oil barrels are in one imperial fluid ounce?
Exactly 0.0001787127865. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert imperial fluid ounces to oil barrels?
Oil Barrels = imperial fluid ounces × 0.0001787127865. To reverse it, divide instead: imperial fluid ounces = oil barrels ÷ 0.0001787127865, which is the same as multiplying by 5595.570521.
Is the imperial fluid ounce bigger than the oil barrel?
No. One imperial fluid ounce is only 0.000178713 of a oil barrel, so the oil barrel is the larger unit.
Why does my answer differ slightly from other imperial-fluid-ounces to oil-barrels converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a imperial fluid ounce?
The UK fluid ounce, about 4% smaller than its US counterpart.
What is a oil barrel?
The petroleum barrel: 42 US gallons, the global oil trading unit.
Imperial Fluid Ounces to oil barrels reference table
| Imperial Fluid Ounces | Oil Barrels |
|---|---|
| 0.5 fl oz | 0.000089 bbl |
| 1 fl oz | 0.000179 bbl |
| 2 fl oz | 0.000357 bbl |
| 3 fl oz | 0.000536 bbl |
| 5 fl oz | 0.000894 bbl |
| 10 fl oz | 0.001787 bbl |
| 15 fl oz | 0.002681 bbl |
| 20 fl oz | 0.003574 bbl |
| 25 fl oz | 0.004468 bbl |
| 50 fl oz | 0.008936 bbl |
| 75 fl oz | 0.013403 bbl |
| 100 fl oz | 0.017871 bbl |
| 250 fl oz | 0.044678 bbl |
| 500 fl oz | 0.089356 bbl |
| 1000 fl oz | 0.178713 bbl |
Exact factor: 1 imperial fluid ounce = 0.0001787127865 oil barrels. Values rounded for display.