Home calculator
Laminate Flooring Calculator
Estimate laminate flooring planks from room size, plank size, expansion gap, waste allowance, and optional planks per pack.
Enter your dimensions
Current unit: feet. The estimate updates automatically in your browser.
Enter the room length in the planned plank direction.
Enter the room width across the plank rows.
Enter the length of one laminate plank.
Enter the face width of one laminate plank.
Optional. Enter the expansion gap at each wall edge. The calculator subtracts it from both sides.
Optional. Add extra allowance for cuts, stagger pattern, damaged planks, and ordering margin.
Optional. Enter planks per pack if you also want an estimated pack count.
Estimated result
Planks needed
Enter your inputs
Your estimate will appear here automatically once the required inputs are valid.
Guide
How to use this estimate
How the laminate flooring calculator works
This calculator subtracts the expansion gap from both sides of the room length and width, estimates planks per row from usable room length and plank length, estimates rows needed from usable room width and plank width, and then adds optional waste allowance.
This is a plank count estimate, not a flooring layout or cut plan. It does not model stagger pattern, plank direction changes, transitions, doorways, closets, stairs, underlay, expansion trims, thresholds, or damaged boards.
This calculator uses conservative plank-level math. It assumes a fresh plank starts each row and does not model reusing offcuts, so the result may be higher than an installer’s optimized layout.
What to measure
Measure the room length in the planned plank direction and the room width across the plank rows. Then enter the length and width of one laminate plank.
In imperial mode, room dimensions use feet while plank size and expansion gap use inches. In metric mode, room dimensions use meters while plank size and expansion gap use centimeters.
Enter planks per pack only if you want the calculator to also estimate pack count.
Example laminate flooring calculation
- Room length: 12 feet
- Room width: 10 feet
- Plank length: 48 inches
- Plank width: 7.5 inches
- Expansion gap: 0.25 inches
- Waste allowance: 10%
- Usable length: 12 feet minus expansion gap on both ends
- Usable width: 10 feet minus expansion gap on both sides
- Planks per row: usable length ÷ plank length, rounded up
- Rows needed: usable width ÷ plank width, rounded up
- Final planks: base plank count plus waste allowance, rounded up
Estimated laminate flooring needed: the rounded-up plank count, with optional pack count when planks per pack is entered.
Quick reference
| Item | Value | Note |
|---|---|---|
| Usable length | room length - 2 × expansion gap | Expansion gap is subtracted from both ends. |
| Planks per row | ceil(usable length ÷ plank length) | Counts full planks along the room length. |
| Rows needed | ceil(usable width ÷ plank width) | Counts plank rows across the room width. |
| Final planks | ceil(base planks × (1 + waste %)) | Adds optional waste allowance and rounds up. |
Common mistakes to avoid
- Using pack coverage instead of plank dimensions. Use the Flooring Pack Calculator for pack-coverage math.
- Forgetting the expansion gap around the room edge.
- Treating this as a stagger pattern or cut-plan calculator.
- Assuming offcuts are reused automatically. This calculator does not optimize offcut reuse.
Frequently asked questions
How is this different from the Flooring Pack Calculator?
The Flooring Pack Calculator uses floor area divided by pack coverage. This Laminate Flooring Calculator uses plank-level math: planks per row multiplied by rows needed, with optional waste allowance.
Is this a laminate layout or cut plan?
No. This is a plank count estimate, not a flooring layout or cut plan. It does not model stagger pattern, plank direction changes, transitions, doorways, closets, stairs, underlay, expansion trims, thresholds, or damaged boards.
Why might this estimate be conservative?
It assumes a fresh plank starts each row and does not model reusing offcuts. A professional installer may reduce waste with an optimized stagger pattern and offcut reuse.
When should I enter planks per pack?
Enter planks per pack if the laminate box or product listing gives that number and you want an estimated pack count in addition to the plank count.