Convert cubic feet to barrels

1 ft³=0.1781bbl

Use the converter below to change any cubic feet value into barrels instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.17811

Conversion formula

Forward

barrels = cubic feet × 0.1781

Reverse

cubic feet = barrels × 5.61458

Example: 10 ft³ × 0.1781 = 1.78108 bbl.

About both units

From

Cubic Foot

ft³

The cubic foot equals 28.317 litres exactly. It is used in US HVAC and ventilation (CFM — cubic feet per minute), US natural gas billing, and appliance capacity (refrigerators, freezers). One cubic foot is roughly the volume of a standard shoebox times six.

Real-world: A typical US fridge is 20 cu ft (566 L). US HVAC flow rated in CFM. US residential gas billed per 100 cu ft (CCF).

Read full cubic foot reference →

Barrel

bbl

The oil barrel equals 158.987 litres or 42 US gallons. It is the global pricing unit for crude oil and petroleum products. The US dry barrel (115.6 L) and UK beer barrel (163.7 L) are different units that share the same name.

Real-world: Brent crude and WTI oil are priced in US dollars per barrel. Global oil demand is about 100 million barrels per day.

Read full barrel reference →

Cubic Foot to Barrel conversion table

Common cubic feet to barrels values for quick reference.

Cubic Foot (ft³)	Barrel (bbl)
1 ft³	0.1781 bbl
2 ft³	0.3562 bbl
5 ft³	0.8905 bbl
10 ft³	1.78108 bbl
20 ft³	3.56215 bbl
50 ft³	8.90538 bbl
100 ft³	17.8108 bbl
200 ft³	35.6215 bbl
500 ft³	89.0538 bbl
1,000 ft³	178.108 bbl

Tips & common mistakes

Quick tips

1 ft³ = 28.317 L = 0.0283 m³.
CFM to m³/h: multiply CFM by 1.699.
1 m³ ≈ 35.3 ft³.

Avoid these

Confusing ft³ with ft² in US real-estate contexts.
Using 28 L instead of 28.32 L in precision HVAC calculations.
Mixing CCF (100 cubic feet) with CFM (cubic feet per minute) on utility bills.

Frequently asked questions

How many barrels in a cubic foot?

One cubic foot equals 0.1781 barrels.

How do I convert cubic feet to barrels?

Multiply the cubic foot value by 0.1781 to get the equivalent in barrels.

What is 100 cubic feet in barrels?

100 cubic feet equals 17.8108 barrels.

Is a cubic foot bigger than a barrel?

No. 1 cubic foot equals 0.1781 barrels, so one cubic foot is smaller.

How to convert cubic feet to barrels without a calculator?

Multiply by 0.18 for a quick estimate; use a calculator for precise results.

Related volume conversions

📊 See full comparison matrix →

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