Exit Sign Spacing Calculator

Calculate exit sign placement and visibility per NFPA 101.

Exit Sign Type

Letter Height (in)

Minimum 6 inches per NFPA 101

Stroke Width (in)

Minimum 3/4 inch

Corridor Length (ft)

Corridor Width (ft)

Ceiling Height (ft)

Occupancy Type

NFPA 101 Exit Sign Requirements

Minimum letter height: 6 inches (152 mm)
Minimum stroke width: 3/4 inch (19 mm)
Viewing distance formula: 100 ft per inch of letter height
Standard 6" letters = 100 ft maximum viewing distance
Signs required at each exit and along exit access
Must be visible from any direction of approach