Convert cubic feet to cubic inches

1 ft³=1,728in³

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

You have

Equals

1,728

Conversion formula

Forward

cubic inches = cubic feet × 1,728

Reverse

cubic feet = cubic inches × 0.0005787

Example: 10 ft³ × 1,728 = 17,280 in³.

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 →

Cubic Inch

in³

The cubic inch equals 16.387 cubic centimetres. Used in US automotive engineering for engine displacement (e.g., "350 cubic inch V8 = 5.7 L") and in firearms (bullet cartridges). Most of the rest of the world uses cc or litres.

Real-world: 350 cu in V8 = 5.7 L engine. 302 cu in Ford V8 = 4.9 L. Modern specs typically give litres.

Read full cubic inch reference →

Cubic Foot to Cubic Inch conversion table

Common cubic feet to cubic inches values for quick reference.

Cubic Foot (ft³)	Cubic Inch (in³)
1 ft³	1,728 in³
2 ft³	3,456 in³
5 ft³	8,640 in³
10 ft³	17,280 in³
20 ft³	34,560 in³
50 ft³	86,400 in³
100 ft³	172,800 in³
200 ft³	345,600 in³
500 ft³	864,000 in³
1,000 ft³	1,728,000 in³

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 cubic inches in a cubic foot?

One cubic foot equals 1,728 cubic inches.

How do I convert cubic feet to cubic inches?

Multiply the cubic foot value by 1,728 to get the equivalent in cubic inches.

What is 100 cubic feet in cubic inches?

100 cubic feet equals 172,800 cubic inches.

Is a cubic foot bigger than a cubic inch?

Yes. 1 cubic foot equals 1,728 cubic inches, so one cubic foot is larger.

How to convert cubic feet to cubic inches without a calculator?

Multiply by 1,728 for a quick estimate; use a calculator for precise results.

Related volume conversions

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