Cannabis Lighting Calculator

Learn how long and how strong to keep your grow lights on to maximize yield with minimum electricity cost

Big Buds

Maximum Yield

High Efficiency

Minimum Electricity Cost

What Stage is Your Cannabis Plant at?

Select what comes closest based on a regular 15 week schedule

3

Week 3

How Long Do You Keep Your Lights On?

Specify the lighting duration within a 24 hour period

18

Hours

How Strong Are Your Lights?

Use your PAR meter to measure PPFD at your plant’s canopy

Don’t have a PAR meter?

840

µmol/m²s

Your Result

Grow Score

You've reached

85

of your calculated ideal

The daily light integral (DLI) you provide is 45.6 mol/m²d

What is DLI?

Light Intensity

Your grow lights provide enough power

You could increase light intensity at the canopy up to

2400

µmol/m²s

for bigger yields

Light Duration

Your lighting duration is appropriate for the current growth phase

We recommend to keep your lights on for

12

Hours

to keep everything safe

Finish

Start New

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