MEASURE · PLAN · MAKE IT COUNT
Concrete calculator
Estimate the volume of a rectangular slab.
Metric units as labelled. Prices, where used, are in EUR.
Method and limits
Length × width × thickness in metres, plus allowance. Thickness is entered in centimetres. This is a volume estimate, not a structural design or a concrete mix specification.
Worked example
With the editable starting values: 2.2 m³ of concrete. 2,200 litres
- Length (m): 5
- Width (m): 4
- Thickness (cm): 10
- Allowance (%): 10
Frequently asked questions
Are these starting values recommendations?
No. They are editable examples. Use your own measurements and the product label or quoted specification.
What should I check before using the result?
Length × width × thickness in metres, plus allowance. Thickness is entered in centimetres. This is a volume estimate, not a structural design or a concrete mix specification.
Are units and prices converted automatically?
No. These tools use the metric units shown next to each field. Monetary inputs and results are in EUR; enter the relevant EUR tariff or quote. No currency conversion or live prices are applied.