Each line has a required quantity, allowance, pack size and price per unit. Purchase rounding happens before cost calculation. The entered tax applies to subtotal plus delivery. Tax rules and rates are manual inputs; this is not a tax determination service. All lines must use one currency, with no automatic exchange conversion.
Calculation method
Qᵢ = ceil(qᵢ × (1 + rᵢ/100) / sᵢ) × sᵢ; 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.