DLI Calculator

Calculate Your Plant's Lighting Requirements

Daily Light Integralย or DLI is the total amount of photons in the PAR (400-700 nm) range that land on a target point over the course of a day. Meeting proper DLI requirements has a big impact on a plantโ€™s root and flower development. Different types of plants require different DLI levels and have different photoperiods so check out some excellent research on the subject done by Purdue University for various greenhouse crops here.