Lighting Requirement Calculator (USA)
Professional lighting design tool based on IESNA Foot-Candle standards.
Calculation Results
Based on IESNA Lighting Standards
Total Lumens Required
0
Overall brightness needed
Recommended Fixtures
0
Bulbs or Lights needed
Estimated Layout
Top View (Dots = Lights)
How to Calculate Lighting Requirements (USA Standards)?
Lighting design experts in the USA utilize Foot-Candles (FC) as the standard unit of measurement. A Foot-Candle represents the amount of light (luminance) that reaches a surface area of one square foot from a uniform source of one candela. This Lighting Requirement Calculator (USA) adheres to the guidelines set by the Illuminating Engineering Society (IES).
Key Formulas Used in This Tool:
- Room Area: Length (ft) × Width (ft)
- Total Lumens: Area (sq ft) × Required Foot-Candles
- Fixtures Needed: Total Lumens ÷ Lumens per Fixture
Recommended Foot-Candle Levels (USA)
| Room Type | Foot-Candles (FC) |
|---|---|
| Living Room | 10-20 |
| Kitchen (General) | 30-40 |
| Kitchen (Task / Cooking) | 50-75 |
| Bathroom | 40-50 |
| Bedroom | 10-20 |
| Home Office / Computer Work | 50-75 |
| Garage / Workshop | 70-80 |
Note: This calculator provides an estimation. For complex commercial projects, we recommend consulting a certified lighting designer.
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