Calculate the square footage of rooms, floors, and spaces for flooring, painting, and home improvement projects.
Total Results:
Total Square Footage: 192.0 sq ft
Total Square Meters: 17.8 sq m
Total Square Yards: 21.3 sq yd
Flooring Cost Estimate: $960 (at $5/sq ft)
Paint Coverage: 0.5 gallons needed
Space Measurement & Material Planning Framework
Shape Formulas
- Rectangle: L × W
- Square: S²
- Circle: πr²
- Triangle: (B × H)/2
- L / Complex: Decompose → sum component areas
Multi‑Room Workflow
- Capture raw dims (laser) → enter → verify auto area
- Subtract non‑covered zones (islands, permanent cabinetry)
- Apply waste multiplier by material (Tile 12%, Hardwood 7%, Carpet layout dependent, Laminate 8–10%)
- Convert ft² → m² (×0.092903) / yd² (÷9) when quoting
Paint & Finish Quick Calcs
- Wall Area Approx = Perimeter × Height − Openings
- 1 gal ≈ 350–400 ft² smooth • −15% textured
- Doors ~20 ft², Windows ~15 ft² average deduction
Cost Drivers
- Material grade & pattern alignment (herringbone ↑ waste)
- Subfloor prep / leveling allowances
- Logistics: Stair carry & disposal surcharges
Accuracy Enhancers
- Cross‑measure diagonals to detect non‑square rooms (>3/8" deviation in 10' span)
- Label each room scenario for quote traceability
- Snapshot revision when dimensions change mid‑scope
Common Errors
- Ignoring closets / alcoves → under‑order
- Adding waste before summing aggregated area (inflates)
- Not isolating patterned layout overage separately
Quick FAQ
- Why waste % varies? Cut complexity + pattern + fragility.
- Use interior or exterior dims? Use finish to finish for coverage materials.
- Round when? Only at final procurement quantities.
Tip: Store each room block as a scenario for rapid what‑if pricing (material swaps).