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TECHNICLIGHTLighting Systems

LED Lifetime (L70/L80)

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See how many years your LED will last for your usage pattern, and its flux decay curve.

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If not stated in the product specs, the common default is 50,000 hours.
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Advanced settings
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Time to L70
17.1 yr
Time to L80
31,281 h
Time to L90
14,770 h

Flux Decay

40%60%80%100%020,00040,00060,000L80L7050,000 h

LED manufacturers usually rate lifetime as L70 — the hours until luminous flux drops to 70% of its initial value. This tool calculates how many years it takes to reach L70 for your daily usage, the L80/L90 milestones, and the flux decay curve over time — it uses a single exponential decay model and does not replace real LM-80 test data.