Convert US Liquid Barrel to Cubic Foot
Convert us liquid barrels to cubic feet instantly. 1 us liquid barrel = 4.2109375 cubic foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Foot to US Liquid Barrel converter for the reverse conversion.
Units explained
US Liquid Barrel
A US liquid barrel is 31.5 US gallons (119.24 L).
A federal standard barrel size for non-petroleum liquids.
Used in brewing and bulk-liquid commerce.
US trade standard.
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 Liquid Barrel to Cubic Foot conversion formula
The relationship between us liquid barrels and cubic feet:
To convert us liquid barrels to cubic feet, multiply the value in us liquid barrels by 4.2109375. To reverse, multiply cubic feet by 0.2374768089.
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 Liquid Barrel converter for the reverse direction.
Step-by-step: convert us liquid barrels to cubic feet
- Write down the value in us liquid barrels (bbl).
- Multiply that value by the factor 4.2109375.
- The product is the equivalent value in cubic feet (ft³).
- To reverse, multiply the cubic foot value by 0.2374768089.
Worked examples
Example 1 — Convert 1 bbl to ft³:
1 × 4.2109375 = 4.2109375 ft³
Example 2 — Convert 100 bbl to ft³:
100 × 4.2109375 = 421.09375 ft³
Real-world example — Fabric and tailoring
One us liquid 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 × 4.2109375 = 4.2109375 ft³
Real-world example — Body height conversion (reverse direction)
You measure 1.75 us liquid 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 × 4.2109375 = 7.369140625 ft³
Real-world example — Pet and accessory dimensions
A 3-us liquid barrel dog leash equals a tidy round value in cubic feet. Pet-supply shopping frequently mixes the two units across product specifications.
3 bbl × 4.2109375 = 12.6328125 ft³
US Liquid Barrel to Cubic Foot conversion table
Standard reference values for converting us liquid barrels to cubic feet:
| US Liquid Barrel [bbl] | Cubic Foot [ft³] |
|---|---|
| 0.01 | 0.042109375 |
| 0.1 | 0.42109375 |
| 1 | 4.2109375 |
| 2 | 8.421875 |
| 3 | 12.6328125 |
| 4 | 16.84375 |
| 5 | 21.0546875 |
| 10 | 42.109375 |
| 20 | 84.21875 |
| 30 | 126.328125 |
| 40 | 168.4375 |
| 50 | 210.546875 |
| 100 | 421.09375 |
| 500 | 2105.46875 |
| 1000 | 4210.9375 |
Frequently asked questions
How many cubic feet is 1 us liquid barrel?
How do I convert us liquid barrels to cubic feet?
How do I convert cubic feet back to us liquid barrels?
How many cubic feet is 100 us liquid barrels?
Popular volume unit conversions
Convert US Liquid Barrel to other volume units
Show all US Liquid Barrel conversions
Metric / SI (3 units)
US Customary (Liquid) (1 units)
Imperial (UK) (1 units)
Cubic (length-derived) (1 units)
Sources & references
Conversion factor (1 bbl = 4.2109375 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.