Lux to PAR (PPFD) Calculator
Convert lux readings to PAR (PPFD) values for cannabis growing. Optimize your grow light setup with accurate photosynthetically active radiation measurements.
Frequently Asked Questions
What PPFD do cannabis plants need?
Seedlings need 200-400 PPFD, vegetative plants need 400-600 PPFD, and flowering plants perform best at 600-900 PPFD. Some cultivators push to 1000-1500 PPFD with CO2 supplementation.
Is lux the same as PAR?
No. Lux measures visible light as perceived by the human eye, while PAR (PPFD) measures photosynthetically active radiation that plants actually use. The conversion factor depends on the light source spectrum.
