Inputs
IES-style FC presets + editable
Formula: Required lumens ≈ area_sqft × target_fc ÷ loss_factor
Loss factor is a simple “real world” dial (reflectance, dirt, optics, layout). 0.70–0.80 is a common starting point.
Loss factor is a simple “real world” dial (reflectance, dirt, optics, layout). 0.70–0.80 is a common starting point.
Results
—Required lumens (estimated)
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Area × FC (raw lumens)
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Quick spacing hint
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Selected plan: total fixtures
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Selected plan: total watts
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Selected plan: est. amps
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Pick a “plan” by checking exactly one row in the fixtures table (or leave all unchecked to just compare counts).
Fixture Options
Edit lumens/watts to match exact model| PLAN | Fixture Type | Lumens / Fixture | Watts / Fixture | Est. Qty Needed | Est. Total Watts | Notes |
|---|
The defaults here are common published lumen outputs (examples). Swap the lumens/watts to match your exact SKU before quoting.