TOOL 06 / FREE · NO SIGNUP
Flooring Calculator
Convert floor area into purchase boxes. See required coverage, bought coverage and estimated leftover.
Worked example loaded. These are example measurements and product assumptions.
THE METHOD
How to use this estimate
- Enter inside room dimensions or a known net floor area.
- Apply waste to physical area before calculating boxes. The allowance is editable and should reflect your layout and material.
- Coverage per box comes from the product label. Estimated leftover is purchased coverage minus the allowance-adjusted requirement.
boxes = ceil(floor area × (1 + waste / 100) ÷ coverage per box)
A worked example
The “Load worked example” button uses the same inputs as this example. Explicit unit suffixes keep their meaning in either unit system.
- How will you measure?
- I know the area
- Net area
- 20 m2
- Waste allowance
- 10
- Flooring coverage per box
- 2 m2
- Price per box
- 40
- Measured floor
- 20 m² / 215.278 ft²
- Boxes
- 11
- Purchased coverage
- 22 m² / 236.806 ft²
- Estimated leftover
- 0 m² / 0 ft²
- Estimated material cost (your currency)
- 440
Questions, answered
Can I calculate area without knowing box coverage?
Yes. Leave box coverage blank. Only the shopping count remains unconfirmed.
What is included in the cost?
Boxes multiplied by your entered box price. No supplier price is fetched; tax, delivery, labor and accessories are excluded.
Sources and product assumptions
These references explain units or product specifications. Your selected product label takes priority; none of these sources endorses this calculator.
- Shaw Prime Plank 0616V — product-specific coverage per carton ↗
- Floorify — cutting allowance varies with product, installation and room shape ↗
- NIST area conversions ↗
Source check: 4 October 2026. Worked examples use stated, editable assumptions.