Egress Calculator

This Egress Calculator is intended to provide you with the specifications needed to determine if a custom sized egress window meets egress requirements. Due to the varrying nature of windows, this calculator will only be accurate for egress windows from the Great Egress Company.

To use:

  • Select the type of window from the drop down.
    • If the window is wider than it is tall, we recommend the reverse hopper.
    • If it is taller than it is wide, we recommend the side hinge.
    • If you're a sucker for European style, check out the tilt-and-turn
  • Enter the Width and Height (in Inches) of the window you are considering purchasing.
  • Press Calculate.
  • The table below will populate with the specs that you need to determine if this window will meet egress requirements in your area

Window Specifications
Width Height SQ Footage
Frame Size
Clear Opening
Visible Glass
Building Code Compliance
W H A Compliant?
Canadian National (NBCC)
City of Guelph

Note: The width (W), height (H), and area (A) requirements must all be met in order to be egress compliant.