Calculators
![Converting PPFD to DLI](http://horticulturelightinggroup.com/cdn/shop/articles/HLG_CAL_converting_PPFD_TO_DLI_d5a93c54-4c3c-4f85-a591-24e9e0170f0e_{width}x.jpg?v=1638562834)
Quantum Sensors measure measure the instantaneous photosynthetic photon flux density in µmol m-2 s-1. Use Calculator below to convert instantaneous PPFD µmol m-2 s-1 to DLI photosynthetic photon flux density in mol m-2 d-1 Enter PPFD : Enter Hours :...
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![How much heat does a lamp produce? Watts to BTU Calculator](http://horticulturelightinggroup.com/cdn/shop/articles/HLG_CAL_watts_to_BTU_calculator_{width}x.jpg?v=1639159864)
With a high efficiency light source with 50% efficiency, half the power is radiated as heat and the other half as light. Almost all light is converted to heat after it hits the walls and plants. Only a small fraction...
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