Fire Escape Distance Checker

Check travel distance compliance, calculate exit width requirements and estimate occupancy against Approved Document B.

Building Type

Escape Route Details

Escape direction

Sprinklered?

Travel distance

Floor area

m²

Number of exits

Results

Enter details

Max Travel

—

Margin

—

Occupancy

—

persons

Min Exit Width

—

mm total

Distance check —

Recommended exits —

Width per exit —

ADB Max Travel Distances

Residential 9 m / 18 m

Office 18 m / 45 m

Retail 18 m / 45 m

Assembly 15 m / 32 m

Industrial 25 m / 45 m

Educational 18 m / 45 m

Single direction / Multiple directions. With sprinklers: ×1.5

Exit Width Rules

Minimum door width: 750 mm

1 unit of exit width (530 mm) per 40 persons

Minimum 2 exits when occupancy exceeds 60 persons

Important

This tool provides guidance based on UK Approved Document B. Always verify with the latest edition and consult a fire safety engineer for complex buildings.