Grow Light Bulb Wattage Calculator

Bulb Watts Calculator

Determining the ideal wattage of your grow light is critical for a successful indoor garden. The wattage determines the strength of light supporting your plants.

It is recommend that you provide your plants 50 watts of grow light per square foot in the growing area. Insufficient light will result in unhealthy leggy plants that produce low yields.

When entering your measurements, either round up to the next foot or use decimals for more accuracy. (sorry-fractions won't work)

Enter the length of your growing area by feet:

Enter the width of your growing area by feet:

Total square feet of your grow room:

Your indoor garden area needs:


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