Will it fit? Home wall planner

Use your own measurements. The figures update as you type. Prices stay blank until you type what a merchant actually quoted.

What the planner is doing

Angle is measured from vertical. A vertical panel is 0°. A 40° board is the steep training angle Moon publishes as one of its two standard setups, not a guess at "quite overhanging".

The panel is assumed to leave the back wall at the top and kick into the room at the bottom.

• Vertical rise is limited by the room height, with 15 cm kept clear of the ceiling so a hand on the top hold is not in the plaster.
• Panel length along the wood is that rise divided by the cosine of the angle.
• Floor run-out is the rise multiplied by the tangent of the angle.
• If the run-out plus the landing you asked for is deeper than the room, the panel is shortened until it fits.
• Width keeps 15 cm clear of each side wall.

Plywood is counted as whole 2440 × 1220 mm sheets, trying both orientations and keeping the smaller count. That is a simple cutting plan, not a nested one, so offcuts can still leave you a sheet short if the frame eats the edge.

T-nuts sit on the grid you choose, inset 50 mm from the panel edge. The starter hold hint is 8 holds per square metre of panel, rounded up to the next 5. It is a sparse first set so the wall is usable, not a setting plan.

What it will not tell you

It does not know your brick, your joists, your door, or how you climb. The warning text names the check. It does not sign it off. A steep freestanding frame, a loft floor and a stud wall all need a competent builder, and an engineer where the load is not obvious.

The cost lines multiply your prices by the quantities. Timber, fixings, a frame, paint, bolts and delivery are extra unless you have folded them into a price you typed.

Worked default

A room 300 cm wide, 500 cm deep and 250 cm high, with a 244 cm panel at 25° from vertical and 100 cm of landing past the kicker, leaves a panel 259 cm along the wood. The vertical rise is 235 cm and the floor run-out is 110 cm. At a 200 mm grid with a 50 mm edge margin that is 3 sheets of 2440 × 1220 mm plywood and 156 M10 T-nuts. The starter-hold hint is 55.

Change the angle to 40° in the same room and watch the run-out grow. That jump is the reason a garage that "looks big enough" often is not, once the mat and the car are still in it. The size and angle guide shows the same geometry as a table.