Concrete Calculator
Estimate concrete volume and add a practical waste allowance.
Calculate →Construction · Renovation · DIY
Calculate exactly what you need.
Simple, practical calculators for construction, renovation and DIY projects.
Browse Calculators →Popular calculators
Start with a measurement. Get a clear material estimate without the spreadsheet.
Gravel Calculator
Estimate gravel volume, weight and cost from your dimensions.
Calculate →Mulch Calculator
Work out mulch volume and how many bags you need.
Calculate →Paint Calculator
Estimate paint quantity from wall area, openings and coats.
Calculate →Flooring Calculator
Calculate floor area, waste and package quantities.
Calculate →How it works
No account. No complicated setup. Just the numbers that matter.
01
Measure
Enter your project dimensions.
02
Calculate
CalcItExact calculates the material requirement.
03
Plan
See how much to buy, including waste.
Built for clarity
Know where the number comes from.
Every calculator is designed to keep the calculation visible instead of hiding it behind a black box.
- ✓Formula
See the calculation used. - ✓Units
Work in metric or imperial where supported. - ✓Waste allowance
Choose the percentage instead of relying on a hidden assumption. - ✓Assumptions
Material properties and coverage estimates are clearly labelled.