Target PPFD from DLI Calculator

What this calculator estimates

Work backward from a daily light integral target to an average canopy PPFD.

How the calculation works

PPFD equals target DLI multiplied by one million, divided by photoperiod seconds.

How to use the result

Enter values that represent the current setup, review the estimate, and compare it with measurements and equipment documentation before making operational changes.

Important limitations

This assumes PPFD is stable and evenly distributed. Verify with a calibrated meter and multiple canopy measurements.

This calculator is a planning aid. Recheck assumptions whenever equipment, crop size, room conditions or schedules change.