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Cubic Feet Calculator

Enter length, width, and depth in feet, inches, yards, or meters to get the volume in cubic feet. Cubic feet is the unit on most bagged soil, mulch, and concrete products.

You need approximately
100 cubic feet
Cubic feet
100 ft³
Cubic yards
3.7 yd³
Cubic meters
2.83 m³

Field notes

Bagged soil, mulch, and concrete are labeled in cubic feet, so this is the unit you actually shop in — no ÷27 step needed. Watch the mixed units: a bed measured in feet but filled to a depth in inches needs the inches converted first. For containers and odd shapes, break the volume into simple boxes and add them rather than trusting a single rough guess.

How the cubic feet calculator works

The math behind the tool:

cubic feet = length × width × depth (all in feet)

Sources: Oregon State University Extension (soil and compost volume guidance).

Frequently asked questions

How do you calculate cubic feet?

Multiply length × width × height in feet. If a dimension is in inches, divide it by 12 first. A box 2 ft × 2 ft × 3 ft is 12 cubic feet.

How many cubic feet are in a cubic yard?

A cubic yard contains 27 cubic feet, so divide cubic feet by 27 to convert to cubic yards.

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<iframe src="https://buildcalc.pages.dev/embed/cubic-feet/" width="100%" height="520" style="border:1px solid #e5e3dc;border-radius:12px" loading="lazy" title="Cubic Feet Calculator by BuildCalc"></iframe>
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