Calculator results enter the project as purchase quantities, so do not add the same reserve again. Identical lines can be merged deliberately when name, unit, price, pack size and allowance match. Projects and profiles stay in this browser; exporting is your backup. Clearing browser storage or switching devices will not preserve them automatically.
Calculation method
C = (Σ(Qᵢ × pᵢ) + D) × (1 + T/100)Measure. Calculate. Build.
- Use actual dimensions and split complex rooms into rectangles.
- Allow for cuts, joints and package sizes. Compare stock formats.
- Combine your results in a shopping list you can save and print.
Sources & limits
Planning estimates; verify measurements and product data before purchasing.
Prices are supplied by you. Area estimates do not establish a feasible cutting arrangement. These tools do not assess structural loads or issue construction approvals.