How to use this calculator
- Enter finished panel size. Use the final width and length after trimming, sanding or flattening.
- Set stock and strip size. Enter stock thickness, planned strip width, rough board width and rough board length.
- Add trim and kerf. Leave side and end allowance for squaring, defects, snipe and final trimming, then enter rip saw kerf.
- Set clamp spacing. Use the desired spacing along the panel length to estimate parallel clamps.
- Review takeoff. Check rough boards, strip count, glue lines, board feet, yield, cost and trim margin.
How it works
A panel glue-up takeoff starts with a rough blank, not the final size: target blank width = finished width + 2 x side trim strip count = ceil(target blank width / strip width) The calculator then estimates how many strips fit in each rough board after rip kerf, rounds up the rough board count, and carries the purchased stock into board feet and yield.
Clamp count is a layout screen: clamps = ceil(strip cut length / target clamp spacing) + 1 where strip cut length is the finished panel length plus end trim at both ends. For adjacent woodworking planning, use the cut list calculator, board feet calculator, wood moisture content calculator and wood movement calculator.
Worked example
Verified against the live calculator
A 24 in x 36 in panel with 1/4 in side trim,
1 in end trim and 2.5 in strips needs a
24.5 in target blank width. That rounds up to
10 strips, or 9 glue lines. From
5.5 in rough boards, two strips fit per board after a
1/8 in saw kerf, so the takeoff is 5 rough boards.
With 8 in target clamp spacing along a 38 in
strip cut length, the clamp screen returns 6 clamps.
Frequently asked questions
How do you calculate strips for a panel glue-up?
Add side trim allowance to the finished panel width, then divide by the planned finished strip width and round up. The extra width becomes trim margin for final squaring.
How many clamps do I need for a panel glue-up?
A common first-pass layout is one clamp at each end plus intermediate clamps at the target spacing. This calculator uses ceiling(strip cut length / target spacing) + 1.
Does this optimize board order or grain matching?
No. It estimates strips, boards, clamps and board feet. Grain matching, color, growth-ring orientation, moisture conditioning and flattening remain shop decisions.
Why can the yield look low for one small panel?
Purchased board length is counted as bought stock. Long offcuts may be reusable in the shop, but they are still part of the purchased lumber for this single-panel takeoff.
Method & assumptions
- All strips are treated as equal finished widths.
- Rough boards are treated as identical boards with one usable width and length.
- Rip kerf is counted between strips ripped from the same board.
- Purchased board feet include full rough board length; reusable offcuts are reported but not credited back against the job.
- Does not optimize grain sequence, color match, growth-ring orientation, cupping, bow, twist, moisture content, glue open time, clamp pressure, cauls, flattening or sanding loss.