Concrete Calculator

Calculate concrete volume for slabs, footings, and columns.

Fill in the fields below to calculate

Shape

Length (m)

Width (m)

Depth (m)

Radius (m)

Height (m)

Length (m)

Width (m)

Depth (m)

Enter your values above to see the result.

Your Results

Concrete Volume

Cement Bags (40kg)

Sand (m³)

Gravel (m³)

Formulas

Slab: V = L × W × D

Column: V = π × r² × h

Footing: V = L × W × D

Cement bags: = ⌈V / 0.028⌉

Sand: = V × 0.04 m³

Gravel: = V × 0.08 m³

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Pro Tips

Results update as you type — change any field to see the effect immediately.

Check that every value uses the same unit before comparing results.

Use the copy button to paste the concrete figures into a note or spreadsheet.

Nothing is sent to a server, so you can use this with private figures.