Use this calculator to figure out how many lights to use in your grow room.
* To use this calculator, you must know the lumen rating of the lights you plan to use.
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Frequently Asked Questions
Why should I use this calculator?
Time to buy marijuana grow lights? Looking to maximize yield? You will need to calculate the lumen light needed to grow your own cannabis and get the best yield. This online calculator determines lumen needs based on the square footage of your grow space.
For this lumen estimation calculator, you will need the width and length of your room, and the number of lumens your specific marijuana grow light emits. This is usually found on the package. Although standard lights produce a small number of lumens, marijuana grow lights emit thousands of lumens.
Before you use this lighting calculator, pick a few different marijuana grow lights that you are thinking of buying. Write down how many lumens each light emits. Then use this calculator to decide on the best light choice for your grow space!
Sign up for the Cannabis Growing Pro Certificate Program to learn more about using lights to increase yield.
What are lumens?
Lumens are a measurement of visible light. In the most basic terms, lumens equal brightness. The number of lumens indicates how much light is produced by the bulb. Because of this, lumens and cannabis crop yield are related. The lumens rating affects the yield of your cannabis garden.
Sign up for the Cannabis Growing Pro Certificate Program to learn more about lighting in indoor marijuana grow rooms.
How many lumens do I need to grow marijuana in my house?
Use this online lumen estimation calculator to know how many lumens you need based on the square footage of your grow room. Put in the length and width of your grow space to calculate the lumens needed to grow your own cannabis in your space.
If you want to take it a step further, enter how many lumens your grow light emits. The grow light calculator will tell you how many lights you need for your indoor grow space.
Sign up for the Marijuana 101 Certificate Program to learn how to start growing marijuana indoors.
Will this lighting calculator help me with growing weed with LED lights?
This lighting calculator will help you with growing weed with LED lights! After you calculate the square footage of your grow room, enter the lumens of your LED lights to find the best lights to use for your cannabis grow room!
Sign up for the Marijuana 101 Certificate Program to learn how to use LED lights in indoor cannabis gardens.
What should be the light intensity for marijuana?
Lumens are a good measurement of light intensity for cannabis. The optimal light intensity for weed in commercial cannabis facilities is 7,000 to 10,000 lumens. A mid-range light intensity for pot is 5,000 lumens. At minimum, your marijuana grow room should have a light intensity for marijuana of at least 3,000 lumens.
Sign up for the Cannabis Growing Pro Certificate Program to learn more about marijuana grow room lighting.
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