Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 bbl | 0.00561458 ft³ | |
| 0.01 bbl | 0.0561458 ft³ | |
| 0.1 bbl | 0.561458 ft³ | |
| 1 bbl | 5.61458 ft³ | |
| 5 bbl | 28.0729 ft³ | |
| 10 bbl | 56.1458 ft³ | |
| 50 bbl | 280.729 ft³ | |
| 100 bbl | 561.458 ft³ | |
| 1000 bbl | 5614.58 ft³ |
Common oil barrel values converted to cubic foot — factor: 1 bbl = 5.615 ft³
| Oil Barrel (bbl) | Cubic Foot (ft³) | Context |
|---|---|---|
| 0.001 bbl | 0.005615 ft³ | Small batch |
| 0.01 bbl | 0.05615 ft³ | Test batch |
| 0.1 bbl | 0.5615 ft³ | Small drum |
| 0.5 bbl | 2.807 ft³ | Half barrel |
| 1 bbl | 5.615 ft³ | Oil barrel |
| 5 bbl | 28.07 ft³ | Small tank |
| 10 bbl | 56.15 ft³ | Small batch |
| 50 bbl | 280.7 ft³ | Tanker truck |
| 100 bbl | 561.5 ft³ | Small storage |
| 500 bbl | 2,807 ft³ | Pipeline batch |
| 1,000 bbl | 5,615 ft³ | Small reserve |
| 5,000 bbl | 2.807e+04 ft³ | Tank farm |
| 1e+04 bbl | 5.615e+04 ft³ | Tank farm |
| 1e+05 bbl | 5.615e+05 ft³ | Day output |
| 1,000,000 bbl | 5,615,000 ft³ | Supertanker |
Converting oil barrel to cubic foot comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using cubic foot, or a laboratory protocol may specify volumes in oil barrel that need to be measured with equipment calibrated in cubic foot.
In everyday use, knowing that 5 bbl = 28.07 ft³ and 10 bbl = 56.15 ft³ covers most common situations. For bulk calculations, 100 bbl = 561.5 ft³ is a useful anchor. The reverse conversion — cubic foot back to oil barrel — uses the factor 0.1781, so 1 ft³ = 0.1781 bbl.
All conversions use the internationally recognized factor of exactly 1 bbl = 5.615 ft³. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Cubic Foot = Oil Barrel × 5.6145822
Multiply any oil barrel value by 5.6145822 to get cubic foot. One oil barrel equals 5.6145822 ft³.
Reverse: Oil Barrel = Cubic Foot × 0.17810764
1 bbl = 5.6145822 ft³. Memorize this for instant mental estimates.
Use 5.6146 as a quick mental factor. Multiply your oil barrels value by this to estimate cubic feet.
To verify: multiply your result by 0.17810764 to recover the original bbl value.
Calculates crude oil reserves, production rates, and pipeline throughput in barrels per day.
Prices oil futures denominated in USD per barrel on NYMEX and ICE exchanges.
Tracks feedstock intake and product output in barrels per stream-day.
Reports strategic petroleum reserve levels and OPEC quota compliance in millions of barrels.
Converts barrel quantities to liters for reactor sizing and process design calculations.
Compares global oil demand forecasts from IEA and EIA expressed in barrels per day.
The US oil barrel (bbl) is defined as exactly 42 US gallons, equal to 158.987 liters. The 42-gallon standard was adopted by the Pennsylvania oil industry in 1866, based on the wine tierce barrel.
Oil barrels are the global benchmark for crude oil pricing: NYMEX WTI and ICE Brent futures are quoted in USD per barrel. OPEC quotas and national reserves are all expressed in barrels per day.
Interesting fact: No physical barrels are used to ship crude oil today. The unit is purely a pricing and accounting convention; tankers carry millions of barrels in sealed tanks.
The cubic foot is the Imperial and US customary volume unit equal to the space occupied by a cube with one-foot sides. It was formally standardized in the UK by the Weights and Measures Act of 1824.
Cubic feet appear in HVAC (airflow in CFM), natural gas billing in the US, and real-estate appraisals. One cubic foot equals exactly 1,728 cubic inches or approximately 28.317 liters.
Interesting fact: US natural gas meters read in CCF (hundreds of cubic feet) or MCF (thousands), making the cubic foot the invisible unit behind most American gas utility bills.