Flooring quantity
Total room areas and estimate packs, purchased area and cost with waste included. Drag the graph handles to change inputs and explore the result.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
How it works
- Net area = Σ × ; Area including allowance = Net area × (1+/100); Whole packs = ceil(Area including allowance/)
- Worked example: 20 m² × 1.1 = 22 m²; ceil(22/2.5) = 9 Whole packs ⇒ 22.5 m²
- Supported input limits: Entries: 1–20; : 0 ≤ x ≤ 1,000; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 0 ≤ x ≤ 1,000,000,000,000
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Add non-overlapping rectangular areas. Pack coverage remains in m² regardless of the room length unit. Excess area includes both your waste allowance and whole-pack rounding. The estimate excludes fitting labor, underlay and thresholds unless you budget them separately.
Sources
- OpenStax — rectangle areas and dimensional measures Sources reviewed: 2026-10-06
