DLI Calculator

Light is a plant’s food. It is imperative that cultivator’s monitor the amount and type of food their plants receive, just as a nutritionist must monitor what an athlete eats. Each day there is a minimum amount of sunlight a plant must receive to meet their basic biological needs. The most common metric for this is Daily Light Integral (DLI), which measures the cumulative amount of PAR light energy that a surface receives over the course of a day. This metric gives cultivators insight into how much light is available for their plants, expressed as a Moles per Day value.

ENTER ANY TWO TO GET THE THIRD VALUE

Average DLI Distribution (United States)

Values in light pink represent typical target DLI amounts

500 uMole represents a typical desirable light intensity for indoor early stage growth.

1000 uMole is a high level intensity for both indoor and greenhouse supplemental lighting for late stage and flowering growth.

1500 uMole is a typical plant saturation level for high DLI crops.

2000 uMole is a typical maximum natural sun output on a clear day.

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