Quick answer
Add your chosen waste allowance to the measured floor area, divide by the square feet covered by one box, then round up to the next whole box.
Step by step
- Measure the floor. Find total square footage.
- Add waste. Apply the project-specific allowance.
- Read box coverage. Use the exact square-foot coverage on the carton.
- Divide and round up. Flooring is usually purchased in complete boxes.
Formula or rule of thumb
Example
A project needing 215 ft² after waste with 23.5 ft² per box requires 9.15 boxes, so the purchase quantity is 10 boxes.
Common mistakes
Do not round the project area down, and do not assume every brand or SKU covers the same square footage per carton.
Planning note: product yields, installation methods, site conditions and local requirements can change the final quantity. Use the exact manufacturer or supplier information before purchasing.
FAQ
Why must boxes round up?
Most flooring products are sold only in complete cartons.
Can I use online box coverage?
Use the current coverage for the exact SKU you are buying, preferably from the package or manufacturer.
What if I have unopened boxes left?
Return policies vary by retailer, so check them before relying on returns.