Concrete Slab Volume Calculator
Estimate concrete volume for a rectangular slab. Enter length and width in metres, thickness in centimetres and your own extra-material percentage.
- Free
- No sign-up
- Runs in your browser
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Result
Enter the required values to see your result. Use the example to try the complete calculation.
This is a material-volume estimate, not structural design or a mix recipe. The tool does not choose slab thickness, reinforcement or a safety margin.
How this calculation works
Concrete Slab Volume Calculator
Estimate concrete volume for a rectangular slab. Enter length and width in metres, thickness in centimetres and your own extra-material percentage.
Units and limits
This is a material-volume estimate, not structural design or a mix recipe. The tool does not choose slab thickness, reinforcement or a safety margin.
Formulas
- Calculation
- net m³ = length × width × thickness(cm) / 100; order = net × (1 + extra/100)
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Discover VISU LinkHow to use it
- Choose the operation when available and enter your own values in the labelled fields.
- Check the units and the limits explained below before interpreting the answer.
- Read the result and its details. Copy it or download a result card; no account is required.
Examples
Worked example
5 × 4 m at 10 cm thickness gives 2 m³. With 10% extra, the estimate is 2.2 m³.
Another case
3 × 2 m at 15 cm thickness, without extra, gives 0.9 m³ or 900 L.
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Questions
What does this tool calculate?
Estimate concrete volume for a rectangular slab. Enter length and width in metres, thickness in centimetres and your own extra-material percentage.
Which inputs and units should I use?
This is a material-volume estimate, not structural design or a mix recipe. The tool does not choose slab thickness, reinforcement or a safety margin.
Can I check a worked example?
5 × 4 m at 10 cm thickness gives 2 m³. With 10% extra, the estimate is 2.2 m³.
Are my input values uploaded or stored?
No. The calculation runs in this browser. Typed values are not sent to analytics, placed in the page URL or saved by the calculator. Copying or downloading is an action you choose.
Do I need an account or a paid plan?
No. The calculation, example, result copy and result card are available without registration. VISU services are an optional next step.