Construction · 5 tools
Construction & Home Project Calculators
Plan common building and home-improvement purchases with calculators for concrete, flooring, tile, gravel, and roofing. Each estimate separates measured quantity from waste allowance, converts between metric and US units, and explains where product coverage, density, roof geometry, site conditions, or professional measurement can change what you actually need.
- Tools
- 5
- Updated
- Aug 2026
- Runs
- In browser
- Cost
- Free
Every construction tool
A–Z · 5
- Concrete CalculatorEstimate slab concrete volume in cubic metres and yards, add an allowance, and calculate bags from the manufacturer’s stated yield.
- Flooring CalculatorCalculate room area, add a layout waste allowance, convert square units, and round the result to complete flooring packs.
- Gravel CalculatorEstimate gravel volume and delivery weight using area, compacted depth, extra allowance, and supplier-specific bulk density.
- Roofing CalculatorEstimate simple gable-roof area from footprint, overhang and pitch, then add waste and round to full material bundles.
- Tile CalculatorEstimate a rectangular tile grid using tile dimensions and grout joints, then include waste and calculate full boxes.