Parking Lot Lighting Calculator

Design a compliant parking lot lighting system. Calculate pole count, spacing, fixture wattage, and energy costs — with IES RP-20 compliance check for your security level.

Security level — IES RP-20 standard
Basic
1.0 fc avg / 0.5 fc min
Residential, low-crime areas
Enhanced
2.0 fc avg / 1.0 fc min
Retail, office, commercial
High Security
5.0 fc avg / 2.0 fc min
24hr, hospital, transit hubs
Lot dimensions
Leave blank to calculate from dimensions
Pole and fixture

Please enter lot dimensions.

Poles required
0 poles
0
Total fixtures
0 fc
Avg illuminance
0 ft
Pole spacing
Pole layout — top down view
IES RP-20 compliance check
Energy and cost summary
Lot area
Parking spaces
Security level
Poles required
Pole spacing (avg)
Total system wattage
Uniformity ratio (avg/min)
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The calculators and tools on LightingCalc.lighting 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. LightingCalc.lighting 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.