How to Use the Window Screen Size Calculator
Replacing a window screen yourself goes a lot smoother when you know the exact cut size and total material needed before you buy anything. This calculator takes your window's width, height, and quantity, then calculates the cut dimensions (including margin for the frame) and the total area in square feet you'll need.
When a screen is installed, the mesh is pressed into a spline channel around the frame, which uses up a bit of material beyond the window's exact opening size. If you cut the mesh to the exact window measurement, it usually comes up short. This calculator adds 1 inch of margin on each side — 2 inches total per dimension — to the cut size.
If you have several windows the same size, entering the quantity gives you the total area in one step, which is handy for figuring out how much screen mesh to buy off a roll. For windows of different sizes, calculate each one separately and add the totals together.
Frequently Asked Questions
The screen material needs extra material to seat into the frame's spline channel. This calculator adds 1 inch of margin on each side (2 inches total per dimension) to the cut size.
Yes. If you have several windows of the same size, enter the quantity to get the total area needed. For different window sizes, calculate each separately and add the totals together.