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Home /  Support Center /  Knowledge Base /  LED bulbs (General) /  How to convert lux to PPFD?

How to convert lux to PPFD?


May I ask about the formula for your Lux to PPFD conversion? Specifically for the "Red + Blue LED 450 + 650 nm"

Thank you for reaching out. The formula we use for converting lux to PPFD for the "Red + Blue LED 450+650 nm" spectrum is:

​Lux = 11.27 * PPDF

Can I ask why is it 11.27?

That is the conversion factor between lux and PPFD for the particular spectrum that you requested the information for. Each spectrum has a different conversion factor due to the variations between how lux and PPFD are calculated.

Can I ask how? or where it came from? 

The conversion factor was calculated on our end by comparing the resulting lux and PPFD values when inputting the SPD in question.


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LED bulbs (General)


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