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Hoop House Calculator — Pipe, Plastic & Dimensions

Plan hoop greenhouse pipe, plastic, and stake materials by dimensions

Floor Area

420 sq ft

Hoops

9

Pipe (10ft)

20

Peak Height

7 ft

Units

Growing Floor Area

420 sq ft

Hoops

9

Peak Ht

7 ft

Pipes

20

Materials

PVC/EMT Pipe (10ft)20
Plastic Rolls1
Baseboards (16ft)4
Ground Stakes18
Cover Area737 sq ft

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Example Calculations

130×14 ft Hoop House, 4 ft Spacing

Inputs

Length30 ft
Width14 ft
Hoop Spacing4 ft
Plastic6mil Poly

Result

Floor Area420 sq ft
Hoops9
Pipe (10ft)20
Plastic Rolls1

Hoops = ceil(30/4)+1 = 9. Arc = π×7 = 22 ft. Total pipe = 9×22 = 198 ft = 20 ten-ft pipes. Cover ≈ 660 sq ft = 1 roll.

250×20 ft Hoop House, 3 ft Spacing

Inputs

Length50 ft
Width20 ft
Hoop Spacing3 ft
PlasticGreenhouse Film

Result

Floor Area1,000 sq ft
Hoops18
Pipe (10ft)57
Plastic Rolls2

Hoops = ceil(50/3)+1 = 18. Arc = π×10 = 31.4 ft. Total pipe = 18×31.4 = 565 ft = 57 pipes. Cover ≈ 1,570 sq ft = 2 rolls.

Frequently Asked Questions

Q

How many hoops do I need?

Divide hoop house length by hoop spacing (typically 4 ft) and add 1. A 30 ft hoop house at 4 ft spacing needs 8–9 hoops. Closer spacing (3 ft) provides more snow load strength in northern climates.

  • Formula: Hoops = ceil(Length / Spacing) + 1
  • 4 ft spacing: standard for mild climates
  • 3 ft spacing: better snow/wind resistance
  • Each hoop needs 2 ground stakes
  • End hoops may need extra bracing
Q

What size pipe for a hoop house?

For houses up to 14 ft wide, use 1-3/8" or 1" EMT conduit or PVC. For 20+ ft wide structures, use 1-5/8" high-strength steel tubing. PVC is cheaper but degrades in UV and flexes in wind; metal is stronger and lasts longer.

  • Under 14 ft wide: 1" or 1-3/8" EMT conduit or schedule 40 PVC
  • Over 14 ft wide: 1-5/8" galvanized steel tubing
  • PVC: $0.50–$1/ft, lasts 5–10 years with UV degradation
  • EMT conduit: $0.80–$1.50/ft, stronger, lasts 15+ years
  • Steel tubing: $2–$4/ft, professional grade, 20+ years
Q

How much plastic do I need?

Measure hoop length (half circle = pi × width/2) times the house length, plus end walls if covered. A 14×30 ft hoop house needs about 700 sq ft of plastic. Buy 20% extra for overlap and securing.

  • Hoop length = π × (width / 2) for half-circle profile
  • Cover area = hoop length × house length + end walls
  • Add 20% for overlap, hip rail, and ground securing
  • 6mil greenhouse poly: ~$0.05/sq ft, lasts 1–2 years
  • 4-year greenhouse film: ~$0.10/sq ft, UV stabilized
Q

How much does a DIY hoop house cost?

A 14×30 ft DIY hoop house costs $500–$1,200 depending on materials. PVC and 6mil poly is cheapest (~$500). EMT conduit with greenhouse film runs $800–$1,200. Commercial kits start at $1,500 for the same size.

  • Budget PVC + 6mil: $500–$700 for 14×30 ft
  • EMT + greenhouse film: $800–$1,200
  • Steel + double-layer poly: $1,500–$2,500
  • Commercial kit: $1,500–$3,000
  • Add $200–$400 for end walls, doors, ventilation

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Last Updated: Mar 19, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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