Required Lumens Calculator
Calculate how many lumens your cannabis grow space needs based on area and growth stage. Size your grow lights correctly for optimal plant development.
Frequently Asked Questions
How many lumens does cannabis need?
Seedlings need 5,000-7,000 lux. Vegetative plants need 15,000-50,000 lux. Flowering plants need 45,000-65,000 lux. Multiply lux by your area in square meters to get total lumens.
How many watts per square foot for cannabis?
LED: 30-50 watts per square foot. HPS: 50-75 watts per square foot. These are actual wall watts, not equivalent watts.
