Concrete Calculator

Estimate wet concrete volume, dry-volume allowance, and common material quantities.

Enter your values

Change any field. The result is recalculated on this device.

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m
m
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Your result

Local calculation
Wet concrete volume (m³)2.1
Indicative 50 kg cement bags
17
Indicative sand volume (m³)
0.882
Indicative aggregate volume (m³)
1.764

How this calculation works

Estimate wet concrete volume, dry-volume allowance, and common material quantities. The result is calculated locally in your browser from the visible inputs, and the method below remains available for checking.

Wet volume = l×w×d×quantity×waste; dry-volume factor 1.54 is split by nominal 1:1.5:3 concrete proportions.

Worked example

A 5 × 4 × 0.1 m slab needs about 2.1 m³ wet concrete with 5% waste.

Assumptions and limits

  • Material split is an indicative nominal mix, not a structural mix design.

Questions people ask

How does the Concrete Calculator work?

It applies this displayed method: Wet volume = l×w×d×quantity×waste; dry-volume factor 1.54 is split by nominal 1:1.5:3 concrete proportions. Values stay in your browser and are not submitted to a server.

What should I check before using the Concrete result?

Material split is an indicative nominal mix, not a structural mix design. Quantities are planning estimates. Site conditions, product sizes, workmanship and structural specifications require professional verification.

Does this Concrete calculator save my information?

No. Calculation inputs are processed on this device. Sharing creates a URL only when you choose the share action.

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