Grow Light Calculator
Calculate the number of grow light fixtures needed and Daily Light Integral (DLI) from PPFD, photoperiod, and canopy area for optimal indoor plant growth.
Inputs
Results
Fixtures Needed
2
Daily Light Integral (DLI)
34.56 mol/m²/day
How to Use This Calculator
- Enter the PPFD output and light hours per day for your fixture, along with your total canopy area in sq ft.
- Review Fixtures Needed and Daily Light Integral (DLI) — most vegetables need 15–30 mol/m²/d for optimal growth.
- Enter your electricity cost per kWh to get the Est. Monthly Electric Cost.
- Use Total Power Draw (W) to verify your electrical circuit has sufficient capacity for your lighting setup.
- Check DLI Rating to confirm your light level is appropriate — the calculator will flag if DLI is too low or too high for your crop.
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