LOCAL ENGINEERING ESTIMATE

Daily light integral

Calculate DLI from measured PPFD and a constant lighting schedule.

FORMULA & LIMITS

Understand the model

DLI = PPFD × hours × 0.0036

Use measured PPFD at the relevant plane and wavelength interval. Changing daylight must be integrated separately. There is no universal lux-to-PPFD conversion.

Changing an input invalidates the previous result. Check units before calculating again.

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