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unit.luminous-flux-converter Calculator
Converts between luminous flux units: lumens, kilolumens, candela (at a given solid angle), and luminous efficacy (lm/W). LED bulb packaging uses lumens; lighting design uses lux per m² — this bridges the gap.
Inputs
Value
Reference formula or conversion factor shown for context.
From Unit
Reference formula or conversion factor shown for context.
Power W
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Results
lumens (lm)
Sample size or count used in the calculation.
kilolumens (klm)
Sample size or count used in the calculation.
efficacy (lm/W)
CAC (customer acquisition cost) -- total sales and marketing spend divided by new customers acquired. Healthy LTV:CAC ratio is 3:1 or higher.
LED typical efficacy
CAC (customer acquisition cost) -- total sales and marketing spend divided by new customers acquired. Healthy LTV:CAC ratio is 3:1 or higher.