Daily Light Integral (DLI) Calculator
Daily Light Integral, or DLI, is a measure of light received by a surface over the course of a given day. Knowing the DLI of a plant is important because it helps you determine if a location gets enough light for a plant to grow well. In the case of indoor greenhouses, it helps you determine how much light should be given to your plants.
For example, low light plants require a DLI of 5–10, while medium light plants require 10–15 and high light plants need more than 15. Our calculator is a useful tool in helping you determine the PPFD you should be providing to your plants to help them get proper DLI and grow under ideal conditions.
For more information on how to use DLI and PPFD to optimize plant growth, check out these useful blogs:
PHOTOSATURATION LIGHT AS A LIMITING FACTOR
DLI VALUES OF COMMON PLANTS
- Lettuce: 12-18
- Ornamentals: 9-13
- Fruiting Vegetables: 15-25
- Cannabis: 30-100
- Tomatoes: 16-28
Use the calculator below to determine the PPFD needed to grow your plant at its optimal DLI, or to determine if you're hitting the optimal DLI of your plant with your current PPFD.
hours
mol/m²/day
µmol/m²/s
Please use the CONTACT US form below to get in touch with us for a custom plan to get lights to hit your required PPFD.
