Board Calculator
Plan board rows, stock pieces, total stock length, and waste.
What this calculator does
Whole rows and whole stock pieces are counted before waste.
Surface board plan
Boards run along the surface length. Rows are counted across the width using actual face width and gap.
Your plan updates instantly
Drag with a mouse or finger. Pinch or scroll to zoom.
Whole rows and stock pieces are counted from actual dimensions.
The arithmetic uses the exact values shown above. Verify field measurements, product pack sizes, layout constraints, and local requirements before ordering or building.
How to interpret the result
Whole rows and whole stock pieces are counted before waste.
How the result is calculated
Rows = ceil((width + gap) ÷ (board width + gap)).
Worked example
A 20 x 12 ft surface using 12 ft stock needs two pieces in every row.
Practical guidance
- Measure the project at least twice before ordering.
- Use actual product dimensions and package coverage.
- Keep a saved or printed copy of the inputs used for the estimate.
Assumptions and limitations
Straight parallel boards are assumed; patterned layouts and supported splices need separate planning.
Methodology
Calculations use standard geometry and normalized units. Countable products are rounded up where partial products cannot normally be purchased.
Read the complete calculation methodology and testing policy.
Frequently asked questions
Are results rounded for purchasing?
Countable materials and packages are rounded up. Measured area, length, volume, and cost remain decimal values where appropriate.
Is this a final construction specification?
No. It is a transparent planning estimate. Verify product instructions, site conditions, plans, and local requirements.