Grow Tent Sizing Calculator

Find the right LED wattage, plant count, and light placement for your grow tent. Select a preset size or enter your own dimensions.

Common tent sizes — click to select
2×2
4 sq ft
2×4
8 sq ft
3×3
9 sq ft
4×4
16 sq ft
4×8
32 sq ft
5×5
25 sq ft
5×10
50 sq ft
10×10
100 sq ft
Or enter custom dimensions
Growth stage
Seedling
100-300 PPFD
Vegetative
400-600 PPFD
Flower / Fruit
600-900 PPFD
Growing style

Please enter tent dimensions.

Recommended LED wattage
0 W
0
Sq ft coverage
0
Plants recommended
0
Target PPFD
0
W per sq ft
Tent floor plan
Tent dimensions
Floor area
Growth stage
Target PPFD range
W per sq ft (actual LED)
Recommended DLI
Ventilation (CFM needed)
Recommended light configuration
Shop recommended grow lights on Amazon

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The calculators and tools on LightingCalc.lighting are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. LightingCalc.lighting makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.