Daily Light Integral (DLI) Calculator | Daily light integral calculator online Table of Contents Toggle Daily Light Integral (DLI) CalculatorDaily Light Integral (DLI): Daily Light Integral (DLI) Calculator Calculate the Daily Light Integral (DLI) for your plants based on light intensity and hours of exposure. Light Intensity (μmol/m²/s): Hours of Light Exposure: Calculate DLI Daily Light Integral (DLI):