egress

IRC Codes for Egress

Note: To meet egress, a window must comply with all four IRC requirements.

2nd floor and above:
  • Clear opening width ≥ 20"
  • Clear opening height ≥ 24"
  • Minimum clear opening sq.ft = 5.7 sq.ft.
  • Maximum sill height above the floor = 44"

1st floor:

Note: Does not apply in all jurisdictions.

  • Clear opening width ≥ 20"
  • Clear opening height ≥ 24"
  • Minimum clear opening sq.ft. = 5.0 sq.ft.
  • Maximum sill height above the floor = 44"

Egress & Openings Calculator


Enter your product and opening information below to see if your project meets egress requirements.

Measurement Result 1st Floor 2nd Floor and Above
Clear Opening Width: ≥ 20" ≥ 20"
Clear Opening Height: ≥ 24" ≥ 24"
Clear Opening Sq. Ft.: ≥ 5.0 sq. ft. ≥ 5.7 sq. ft.
Vent Area Sq. Ft.: N.A. N.A.
Daylight Opening Sq. Ft.: N.A. N.A.


This tool is for estimation purposes only. Local codes may differ from IRC requirements; always refer to the codes in your area for complete requirements, and check with local officials to ensure compliance before installation. All products are subject to regional availability. For more information, contact your dealer or distributor.

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