Choosing the right tool
Split irregular spaces into simple non-overlapping rectangles. Use a consistent unit and account for openings only when the installation layout permits a deduction.
Build an area estimate before buying surface materials.
A 20 m² room with 10% waste needs 22 m²; at 2.2 m² per pack this is 10 packs.
Open calculatorFour walls 4 m wide and 2.5 m tall have 40 m². Two coats at 10 m²/L need 8 L before exclusions.
Open calculatorAdd rectangular room or wall sections and subtract a combined opening area.
Open calculatorA 4 × 3 m area with 30 × 30 cm tiles needs 134 whole tiles before waste, or 147 with 10% waste.
Open calculatorSplit irregular spaces into simple non-overlapping rectangles. Use a consistent unit and account for openings only when the installation layout permits a deduction.