Slat wall calculator
Enter your wall size, pick a slat width and gap, and get the exact slat count, evenly spaced across the wall, with a cut list and a material cost estimate.
Open the planner with a slat wall →Runs in your browser. No sign-up, no download. Your first wall is free.
How to space slats evenly
A slat wall is a row of narrow vertical (or horizontal) strips with a consistent gap between them. It looks effortless, but the gap only stays even if the slat count divides the wall cleanly — and that's the sum the calculator solves for you.
- Measure the wall width and height.
- Choose a slat width and a gap. A gap roughly equal to the slat width is a balanced starting point.
- Let it fit the slats. The calculator works out how many slats fit and divides the leftover space so the end gaps match the rest.
- Adjust to taste. Change the slat width or gap and the count and spacing re-balance instantly — compare a dense screen against a lighter, wider rhythm before you buy.
Slat sizes and materials
Common slats are 18–40 mm (¾–1½ in) wide. Painted slat walls are often built from MDF strip; for a wood-tone finish, primed pine or an oak-veneered strip is typical, sometimes mounted on a backing panel or felt. The planner keeps the slat profile separate in the cut list and prices it, so you know the length and cost before you start.
Vertical or horizontal
Vertical slats draw the eye up and make a room feel taller; horizontal slats widen it. The planner handles either orientation, so you can test both against your wall size.
What you get
- A scaled drawing of the wall with every slat placed and the count shown.
- A cut list packed onto your stock length with saw kerf and end trims accounted for.
- A material cost estimate in your currency, with a waste allowance you set.
- A printable build pack — drawings, cuts, a shopping list and fitting steps — to save as a PDF.
Slat wall calculator FAQ
- How do you space slats evenly?
- Choose a slat width and a gap, then fit as many slats as the wall allows so the leftover space divides equally at the ends. The calculator works out the count and keeps every gap identical as you change sizes.
- What gap should there be between slats?
- A gap roughly equal to the slat width is a common, balanced choice. Narrower looks dense and screen-like; wider feels lighter. The calculator holds the gap even across the wall.
- How many slats do I need?
- It depends on the wall width, the slat width and the gap. Enter those and the calculator returns the exact slat count, the cut lengths and a cost estimate.
- Is it free?
- Yes. Plan one wall, see the full layout, slat count, cut list and cost, and export for free. A one-time Pro unlock adds unlimited walls and removes the export watermark.