How do I calculate cubic feet?

Convert all dimensions to feet, then multiply length by width by height or depth.

How many cubic feet are in a cubic yard?

One cubic yard contains 27 cubic feet.

Can I calculate round columns?

Yes. Use the round column mode, enter diameter and height, and the calculator uses cylinder volume.

Cubic Feet Calculator

Calculate cubic feet, cubic yards and cubic meters for rooms, slabs, boxes and round columns from length, width, height or diameter.

Dimension unit

Length

Width

Height

Calculate cubic feet from dimensions

English volume-calculator SERPs are usually practical: enter length, width and height, then get cubic feet plus cubic yards and cubic meters for rooms, slabs, boxes, soil, mulch, concrete, storage and shipping.

V_{f t^{3}} = L_{f t} \times W_{f t} \times H_{f t}

Vft3 — volume in cubic feet.
Lft — length converted to feet.
Wft — width converted to feet.
Hft — height or depth converted to feet.

Common volume conversions

V_{y d^{3}} = \frac{V _{f t^{3}}}{27}

V_{m^{3}} = V_{f t^{3}} \times 0.028316846592

Material estimate caveat

Bulk materials are ordered by local supplier rules. Compaction, waste, moisture, bag size and density can change the amount to buy.

Frequently Asked Questions

Sources and References

Calculations are based on the listed reference sources. Links open in a new tab.

Updated: June 2, 2026

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