Convert US Oil Barrel to Cubic Foot
Convert us oil barrels to cubic feet instantly. 1 us oil barrel = 5.6145833333 cubic foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Foot to US Oil Barrel converter for the reverse conversion.
Units explained
US Oil Barrel
The petroleum barrel is exactly 42 US gallons (158.987 L).
Set by the US petroleum industry in the 1860s and now a global oil-trade standard.
The standard unit for crude-oil pricing and production worldwide.
US oil industry, 1860s.
Cubic Foot
A cubic foot is the volume of a cube one foot on a side (28.3168 L).
Derived by cubing the international foot (0.3048 m).
Used for natural gas, refrigerators, shipping and HVAC.
1959 yard agreement.
US Oil Barrel to Cubic Foot conversion formula
The relationship between us oil barrels and cubic feet:
To convert us oil barrels to cubic feet, multiply the value in us oil barrels by 5.6145833333. To reverse, multiply cubic feet by 0.1781076067.
How to use this converter
Type a value into the calculator. The result in cubic feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Foot to US Oil Barrel converter for the reverse direction.
Step-by-step: convert us oil barrels to cubic feet
- Write down the value in us oil barrels (bbl (oil)).
- Multiply that value by the factor 5.6145833333.
- The product is the equivalent value in cubic feet (ft³).
- To reverse, multiply the cubic foot value by 0.1781076067.
Worked examples
Example 1 — Convert 1 bbl (oil) to ft³:
1 × 5.6145833333 = 5.6145833333 ft³
Example 2 — Convert 100 bbl (oil) to ft³:
100 × 5.6145833333 = 561.4583333333 ft³
Real-world example — Pet and accessory dimensions
A 3-us oil barrel dog leash equals a tidy round value in cubic feet. Pet-supply shopping frequently mixes the two units across product specifications.
3 bbl (oil) × 5.6145833333 = 16.84375 ft³
Real-world example — Fabric and tailoring
One us oil barrel of fabric converts to a value in cubic feet commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 bbl (oil) × 5.6145833333 = 5.6145833333 ft³
Real-world example — Body height conversion (reverse direction)
You measure 1.75 us oil barrels tall and need to fill in a gym membership form or medical record that asks for height in cubic feet. This is the most-used everyday length conversion in metric-using countries.
1.75 bbl (oil) × 5.6145833333 = 9.8255208333 ft³
US Oil Barrel to Cubic Foot conversion table
Standard reference values for converting us oil barrels to cubic feet:
| US Oil Barrel [bbl (oil)] | Cubic Foot [ft³] |
|---|---|
| 0.01 | 0.0561458333 |
| 0.1 | 0.5614583333 |
| 1 | 5.6145833333 |
| 2 | 11.2291666667 |
| 3 | 16.84375 |
| 4 | 22.4583333333 |
| 5 | 28.0729166667 |
| 10 | 56.1458333333 |
| 20 | 112.2916666667 |
| 30 | 168.4375 |
| 40 | 224.5833333333 |
| 50 | 280.7291666667 |
| 100 | 561.4583333333 |
| 500 | 2807.2916666667 |
| 1000 | 5614.5833333333 |
Frequently asked questions
How many cubic feet is 1 us oil barrel?
How do I convert us oil barrels to cubic feet?
How do I convert cubic feet back to us oil barrels?
How many cubic feet is 100 us oil barrels?
Popular volume unit conversions
Convert US Oil Barrel to other volume units
Show all US Oil Barrel conversions
Metric / SI (8 units)
US Customary (Liquid) (7 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 bbl (oil) = 5.6145833333 ft³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.