How do I calculate a wall moulding layout?

Enter the wall width, wall height, moulding zone, number of columns, number of rows, panel width, row heights and gaps. The calculator uses those values to calculate side margins, panel positions and a measured SVG drawing.

Can this calculator plan wainscoting panels?

Yes. It can be used for wainscoting, picture-frame moulding, wall panel frames and similar rectangular wall moulding layouts.

Are product photos used for measurement?

The first version is deterministic and uses confirmed dimensions entered by the user. Product photos or URLs can help identify sizes, but measurements should be confirmed before cutting or installation.

EdgeWorks Apps · Layout Calculator

Wall moulding layouts with measured, installer-ready output.

Enter the wall size, moulding zone, rows, columns, panel sizes and gaps. The calculator produces a deterministic layout, equal margins, warnings and a dimensioned drawing you can download as SVG.

Start layout

6Panels

31.5 cmSide margins

198.2 cmMoulding zone

SVGDownload

Wall and product dimensions

Use the product listing unit for product sizes, and your preferred measurement unit for wall dimensions and output.

Product dimension helper

Paste a product URL for reference, then paste the listing title, bullets or specs. Detection runs locally in your browser.

Product URL Listing text or specs

Paste listing text to detect panel sizes.

Product Size Unit User Measurement Unit Wall width Wall height Bottom of moulding from floor Top of moulding from floor Columns Rows Panel width Horizontal gap Vertical gap Frame/profile width

Row heights

Top row first. Add rows above with the Rows input.

Center layout vertically inside the moulding zone Show floor and base reference line

Measured layout

Same inputs produce the same output every time.

How It Works

Designed as a layout calculator, not a photo guesser.

The calculator uses deterministic geometry: wall width, moulding zone, panel size, gaps, rows and columns. Product URLs and photos can help a user find dimensions later, but the accurate workflow is to confirm those dimensions before generating the drawing.

Auto marginsLeft and right margins are calculated from the remaining wall width.

Flexible gridRows and columns can be changed for single panels, full wainscoting grids or multi-column feature walls.

Fit warningsThe output warns when the chosen panel sizes and gaps cannot fit inside the wall or vertical moulding zone.

Downloadable SVGThe drawing is vector-based, so it stays crisp when shared or printed.

Quick Answer

How to calculate wall moulding panel spacing

To calculate equal side margins for wall moulding, subtract the total panel widths and the gaps between columns from the wall width, then divide the remaining space by two. For example, with a 266 cm wall, three 61 cm panels and two 10 cm gaps, the side margin is (266 - 3 × 61 - 2 × 10) ÷ 2 = 31.5 cm.

Formula side margin = (wall width - columns × panel width - gaps × gap width) / 2

Wall moulding and wainscoting layout calculator

This tool helps plan decorative wall moulding, picture-frame moulding, wall panel frames and wainscoting layouts. Instead of guessing the side margins or manually balancing panels across a wall, enter the wall width, wall height, product panel size, row heights and preferred gaps. The calculator works out the measured panel positions and produces a clean layout drawing.

It is useful when working with pre-cut wall moulding kits, custom timber moulding, chair rail layouts, lower-wall wainscoting, feature walls, dining room panels, hallway wall frames and bedroom panel moulding designs.

What the calculator outputs

The output includes calculated left and right margins, total moulding zone height, total layout width, total layout height, vertical spare space, panel count, fit warnings and a downloadable SVG layout drawing with measurement labels.

Frequently asked questions

What measurements do I need?

Start with the full wall width, wall height, bottom of moulding from the floor, top of moulding from the floor, number of columns, number of rows, panel width, row heights and the preferred gaps between panels.

Does it calculate equal side margins?

Yes. The calculator subtracts the total panel width and horizontal gaps from the wall width, then splits the remaining space into equal left and right margins.

Can I use inches?

Yes. Choose inches as the product size unit when a moulding kit lists panel sizes in inches, and choose your preferred user measurement unit for wall dimensions and output labels.