Check if your emergency lighting meets NFPA 101 and IBC requirements for egress illumination. Calculates minimum foot-candle levels and battery backup compliance.
NFPA 101 Life Safety Code: Emergency lighting must provide a minimum of 1 foot-candle (10.8 lux) at floor level along the egress path. Battery backup must last a minimum of 90 minutes. Max-to-min ratio must not exceed 40:1.
Space details
Emergency fixtures
Emergency fixtures on this egress path
Please enter space dimensions.
Illuminance
Min required: 1.0 fc
Battery backup
Min required: 90 min
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Avg fc at floor
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Min fc (est.)
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Max:min ratio
Space area
Total emergency lumens
Average illuminance
Fixtures needed for 1 fc
Max spacing for 1 fc
Max:min uniformity ratio
Emergency lighting code requirements
NFPA 101 minimum illuminance1.0 fc (10.8 lux) at floor
NFPA 101 battery backup90 minutes minimum
NFPA 101 uniformity ratioMax 40:1 (max to min)
Transfer to batteryWithin 10 seconds of power loss
IBC 1008.31 fc average, 0.1 fc minimum
Test frequencyMonthly 30-sec, annual 90-min test
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