Why the real count is higher
Kerf removes a strip on every cut. Parts may not rotate. Leftover rectangles can be too small to use. Area division is a theoretical minimum, not a cutting plan.
Calculator
How many sheets of plywood
Divide total part area by sheet area for a theoretical minimum, then nest the real layout.
Parts
- Theoretical sheets
- 2
- Part area
- 3.71 m²
- Sheet area used
- 5.95 m²
This is area division only — a theoretical minimum. Kerf, grain, rotation and leftover rectangles usually need more sheets. Calculate the actual layout in the planner.
Grain
Plywood parts start with rotation off, which often needs more sheets than a free-rotate nest.
Worked example
Four 600 × 800 sides and eight 560 × 400 shelves on 2440 × 1220. Area maths may say two sheets; the nest can ask for three once kerf and grain are included.
Questions
Why show a number that might be wrong?
It answers the search quickly and shows the floor. The CTA runs the actual pack so you can see the difference.