Window Molding Calculator

This calculator should help you figure out how to cut all of the wood pieces needed for cutting window molding.

Instructions

  1. If this is your first time here, leave the square and double settings as they are, and just use my defaults and click Calculate.
  2. If you have a square rough opening and square window, you don't need to measure as much (can you tell I've mostly worked in hundred year old houses?)
    Click this button to show/hide the extra measurements:
  3. If you have two windows, next to each other, that will share molding, click:
  4. Measure and fill in the boxes for your window size (not the rough opening, but the actual window size).
Width1:
Width2:
Width3:
Width4:
Width5:
Width6:
Width7:
Width8:

Height1:
Height2:
Height3:
Height4:

Depth1:
Depth2:
Depth3:
Depth4:
Depth5:
Depth6:
Depth7:
Depth8:

Thickness of your wood (in decimal format, e.g. .75 or .5 for 3/4" or 1/2" wood:
Wood Thickness:

You can "name" this window for easier record keeping:
Window Name:



Here is where to get your measurements:


The finished product (you don't have to paint the seascape walls...)

Copyright: 2021, Jon Daley