Flooring Calculator

How to use this calculator

1. Enter room length and width in feet.
2. Enter a waste percentage for cuts/patterns.
3. See total square footage to purchase (base area × waste).

Inputs explained

Room length/width

Floor dimensions in feet. Add multiple rooms together if needed.

Waste %

Extra for cuts, patterns, and defects (5% straight lay, 10–15% for diagonals/patterns).

When to use it

• Estimating material for tile, LVP, hardwood, or carpet before buying.
• Testing higher waste for diagonal or herringbone layouts.
• Budgeting floor coverage across multiple rooms by summing totals.

Tips & cautions

• Increase waste for complex patterns, lots of jogs, or angled layouts.
• Include closets and small areas in your measurements to avoid shortages.
• Round up to full boxes/rolls; keep extras for future repairs and color matching.
• Assumes rectangular rooms; irregular shapes need segmentation.
• Does not subtract for large built-ins or stairs—adjust manually.
• No box/roll coverage built in—convert sq ft to boxes based on product coverage.

Worked examples

Deep dive

FAQs

Does this include closets?

Add closet dimensions separately or include them in the room measurements.

What about staircases?

Calculate stairs separately since tread/riser shapes differ from flat floors.

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