Lumber cutting calculator
Framing a wall, building a workbench or a deck? Enter the lengths you need and it works out the fewest 8, 10, 12 or 16 ft boards to buy, and how to cut each one, with the saw kerf allowed for.
Lumber cutting calculator
The sample is a workbench frame in 2x4. Lengths in inches, or feet and inches like 4' 9.
How it works
Each board is cut into the lengths you need with a saw kerf between every cut. The calculator tries the combinations and finds the plan that uses the fewest boards, then shows each board once with how many to cut that way. The offcut at the end of each board is shown too, so the long ones go on the rack instead of the scrap pile.
Tap a length to change the stock size. 14 ft boards aren’t a button, but you can type 168 or 14'.
Lumber sizes
| You ask for | Actual size |
|---|---|
| 2×4 | 1 1/2 × 3 1/2" |
| 2×6 | 1 1/2 × 5 1/2" |
| 2×8 | 1 1/2 × 7 1/4" |
| 4×4 | 3 1/2 × 3 1/2" |
Dimensional lumber comes in 8, 10, 12, 14 and 16 ft lengths. Precut studs are 92 5/8" for 8 ft walls and 104 5/8" for 9 ft walls.
Questions
Try it on your own job
Free, in your browser, no account. Your cut list stays on your computer.