Grow Tent Size Calculator
Find your tent capacity and estimated setup costs
What is Tent Spacing?
Tent spacing refers to how much floor area each plant needs in your grow tent. Proper spacing ensures adequate light penetration, airflow, and room for the plant canopy to develop. The right spacing depends on your training method — SOG setups pack many small plants, while SCROG uses fewer large plants.
Quick Reference: Common Tent Sizes
| Tent Size | Area | Small | Medium | Large |
|---|---|---|---|---|
| 60×60 cm | ~4 sq ft | 4 | 2 | 1 |
| 80×80 cm | ~7 sq ft | 6 | 3 | 1-2 |
| 100×100 cm | ~11 sq ft | 9 | 5 | 2-3 |
| 120×120 cm | ~16 sq ft | 13 | 6-7 | 3-4 |
| 150×150 cm | ~24 sq ft | 20 | 10 | 5 |
| 240×120 cm | ~31 sq ft | 26 | 13 | 6-7 |
Based on 1, 2, and 4 sq ft per plant respectively. Actual capacity depends on pot size and training method.
How to Use This Calculator
Enter your tent dimensions in centimeters using the sliders. The calculator instantly shows how many plants fit based on three spacing strategies.
Plant Size Options
- Small (1 sq ft / plant): Sea of Green (SOG) style. Many small plants with minimal veg time. Best for quick cycles and autoflowers.
- Medium (2 sq ft / plant): Standard grow with LST or topping. The most popular choice for home growers balancing yield and manageability.
- Large (4 sq ft / plant): SCROG or mainlined plants with extended veg. Fewer plants but maximum yield per plant.
Tips for Optimal Tent Setup
- Leave 10-15 cm around edges for airflow and accessing plants
- Larger pots (11-20L) need more floor space than the plant canopy suggests
- Training techniques like LST and SCROG maximize light use in any spacing
- For perpetual harvest, factor in both veg and flower tent capacity
Frequently Asked Questions
How many plants can I fit in a 4x4 grow tent?
A 4×4 ft (120×120 cm) tent fits 4-16 plants depending on grow style. SOG with small plants: 12-16. Standard grows with medium plants: 6-8. SCROG with large plants: 4. The calculator above gives exact numbers for your dimensions.
What spacing do I need per cannabis plant?
Standard spacing is 2 square feet (roughly 45×45 cm) per plant for medium-sized plants with basic training. SOG growers use 1 sq ft, while SCROG growers need 4 sq ft per plant.
Is it better to grow more small plants or fewer large ones?
Both can achieve similar yields. More small plants (SOG) harvest faster but need more starts. Fewer large plants take longer but are easier to manage. Many home growers prefer 4-8 medium plants as a balance.
Does tent height affect plant capacity?
Height affects how tall plants can grow but not floor capacity. Standard 180-200 cm tents work for most grows. Shorter tents (120-150 cm) require more aggressive training to keep plants low.
Plan Your Complete Grow Setup
Knowing your plant count is just the start. Plantegia helps you plan the full timeline — when to start seeds, when to flip to flower, and when you'll harvest — across multiple tents.
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