Slat Wall Calculator is a free tool and a knowledge site for anyone planning a slat wall. Our goal is simple: to let you work out the right number of slats and linear metres in seconds, and to make good decisions about spacing, materials, and installation before you shop.
What we help you with
At the core is the slat wall calculator, where you enter the wall width, height, slat width, and preferred gap and get the number of slats and total linear metres with an allowance for cuts. Around the calculator we have gathered practical guides on how many slats you need, typical spacing between slats, and how to build the slat wall step by step.
How we work
We use consistent numbers throughout the content, so that an answer you find in an article matches what the calculator gives you. As a typical starting point we work with a reference wall of 240 × 240 cm, slats around 48 mm with an 18 mm gap, and a 10% allowance for cuts - but you can of course adjust every number to your own project.
Independent and free
Slat Wall Calculator is independent of suppliers. We do not sell slats and do not recommend any particular shop. The content is free to use, and the site is funded by ads. If you find something that is wrong or out of date, we appreciate the feedback.
Frequently asked questions
Does it cost anything to use the calculator?
No. Both the calculator and all the guides are free to use, and you do not need to sign in.
Which numbers should I use as a starting point?
A typical slat wall has slats 20-50 mm wide and a 10-30 mm gap. As a default example we use 48 mm slats and an 18 mm gap, which gives roughly 15 slats per metre of wall width.
Can I trust the material estimate?
The estimate gives you a solid basis for shopping, including a 10% allowance for cuts and waste. Always measure the wall carefully yourself, and consider buying a little extra if the wall is uneven or you are working with different lengths.