Construction calculators

Calculate what your project needs

Calculate material quantities or insulation values. Start with a simple tool.

For example paint, drywall, concrete or an R/U conversion.

Quick calculations

All calculators

Drywall board calculator for wallsCalculate boards for rectangular walls, openings, layers, waste, packages and optional cost.Room paint calculatorCalculate paint containers for walls, openings, ceiling, coats and label coverage.Concrete slab calculatorEstimate concrete volume for a rectangular slab with explicit order allowance.R-value to U-value & U-value to R-value calculatorConvert R-value to U-value or U/U-factor back to R-value in SI and US units. Includes RSI, formulas and worked examples.

Planning a bigger job?

Choose a task and follow the calculations you need.

Paint a room Tile a floor Build a drywall wall Pour a concrete slab Plan a fence Thermal insulation Plan roof covering

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