Timber cutting list calculator
Enter the length your timber comes in, your saw’s kerf and the pieces you need. The calculator works out the fewest lengths to buy, shows how to cut each one, and marks the offcuts worth keeping.
Timber lengths calculator
A stud wall is loaded as an example: plates, studs and noggins from 4.8m lengths. Change it to your own job.
How to use it
- Length. Tap the length your merchant sells, or type your own in millimetres.
- Kerf. Your saw blade’s width, usually about 2.5–3.5mm on a mitre saw.
- Price per length (optional) gives the cost of the timber.
- Pieces. The finished length of each piece and how many you need.
- Calculate for the number of lengths, a cutting pattern for each one, and the offcuts worth keeping.
Timber lengths in the UK
Sawn and planed timber is usually sold in lengths from 1.8m to 4.8m, going up in 300mm steps. CLS studwork is commonly 2.4m, 3.0m and 3.6m. What a merchant actually stocks varies, so check before you plan around a length.
Longer is not always cheaper. If most of your pieces are 2325mm studs, two come out of a 4.8m length with very little waste; out of 3.6m lengths, each one leaves an offcut of nearly 1.3m. Try more than one length in the calculator and compare the cost.
Need more than the calculator?
Several lengths at once
The app mixes stock lengths, such as 4.8m and 3.6m together, and picks the cheapest combination.
Sheet material in the same job (Pro)
Add the ply or OSB as a sheet material and get one plan for the whole job.
A saw list for the bench (Pro)
Print a cutting list for each length, with marks from the end of the bar, so cuts go in the right order.
Straight answers
Try it on your own job
Free, in your browser, no account. Your cut list stays on your computer.