This converter turns oil barrels into cubic inches instantly, using the exact factor 1 oil barrel = 9702 cubic inches. 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 petroleum barrel: 42 US gallons, the global oil trading unit. The volume of a one-inch cube, traditional for US engine displacement.
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
oil barrels- The amount you are converting, measured in oil barrels
9702- The exact number of cubic inches in one oil barrel
cubic inches- The converted result
How it works, step by step
- Enter the number of oil barrels you want to convert.
- The value is multiplied by 9702, the exact conversion factor.
- The result is displayed in cubic inches, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 oil barrels
Multiply 5 by 9702. That gives 48,510 cubic inches. A quick sanity check: one oil barrel is larger than one cubic inch, so the number should get bigger — and it does.
Converting 72 oil barrels
72 × 9702 = 698,544 cubic inches. Working backwards, 698,544 ÷ 9702 returns 72 oil barrels, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many cubic inches are in one oil barrel?
Exactly 9702. 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 oil barrels to cubic inches?
Cubic Inches = oil barrels × 9702. To reverse it, divide instead: oil barrels = cubic inches ÷ 9702, which is the same as multiplying by 0.0001030715316.
Is the oil barrel bigger than the cubic inch?
Yes. One oil barrel equals 9702 cubic inches, so it is the larger unit.
Why does my answer differ slightly from other oil-barrels to cubic-inches 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 oil barrel?
The petroleum barrel: 42 US gallons, the global oil trading unit.
What is a cubic inch?
The volume of a one-inch cube, traditional for US engine displacement.
Oil Barrels to cubic inches reference table
| Oil Barrels | Cubic Inches |
|---|---|
| 0.5 bbl | 4,851 in³ |
| 1 bbl | 9,702 in³ |
| 2 bbl | 19,404 in³ |
| 3 bbl | 29,106 in³ |
| 5 bbl | 48,510 in³ |
| 10 bbl | 97,020 in³ |
| 15 bbl | 145,530 in³ |
| 20 bbl | 194,040 in³ |
| 25 bbl | 242,550 in³ |
| 50 bbl | 485,100 in³ |
| 75 bbl | 727,650 in³ |
| 100 bbl | 970,200 in³ |
| 250 bbl | 2,425,500 in³ |
| 500 bbl | 4,851,000 in³ |
| 1000 bbl | 9,702,000 in³ |
Exact factor: 1 oil barrel = 9702 cubic inches. Values rounded for display.