Commercial & Industrial

Warehouse Foot-Candle Calculator

How many foot-candles does a warehouse need? Calculate the required illuminance, fixture count, and high bay spacing for your warehouse based on IESNA RP-7 and OSHA lighting guidelines. Enter your warehouse dimensions and task type to get instant results.
Warehouse Dimensions
Length 200 ft
Width 100 ft
Clear Height 24 ft
Rack Height 16 ft (task level)
Warehouse Activity
High Bay Fixture
Surface Reflectance
Sizing Results
Warehouse area—
Required illuminance (IESNA RP-7)—
Total lumens needed—
High bay fixtures needed—
Fixture spacing—
Mounting height (above rack)—
S:H ratio—
Total connected load—
ASHRAE 90.1 LPD—
Recommended Foot-Candles for Your Warehouse
— fc
—
—
fc required
IESNA target
—
fixtures
High bays
—
kW total
Connected load
—
W/ft²
Power density
IESNA RP-7 Warehouse Illuminance Guide
Inactive storage
10 fc
—
Bulk / pallet storage
20 fc
—
General warehousing
30 fc
—
Picking / labeling
50 fc
—
Fine pick / assembly
75 fc
—
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.