Size an indoor grow light so seedlings and houseplants get enough intensity without wasting energy. Enter the length and width of your growing area in feet to get the canopy area, then set a target of watts per square foot for the type of plants you are growing. Leafy greens and seedlings do well around twenty to thirty watts per square foot of efficient LED, while fruiting plants want closer to forty or more. The calculator returns the total wattage to aim for and the coverage each light provides if you enter a fixture wattage, so you can decide how many lamps to hang. Keeping the light close and even prevents the stretched, leggy growth that dim windowsills cause. Everything is calculated instantly in your browser with no signup.
Size an indoor grow light so seedlings and houseplants get enough intensity without wasting energy. Enter the length and width of your growing area in feet to get the canopy area, then set a target of watts per square foot for the type of plants you are growing.
Yes. Grow Light Coverage Calculator is completely free, with no sign-up and no usage limits.
Yes. Grow Light Coverage Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Grow Light Coverage Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.