Hoop House Calculator

Estimate plastic and hoops for a hoop house.

Length

Width

Hoop pipe length 1.571

Cover plastic area 2.571

Formula: hoop = semicircle perimeter

Step-by-step with your numbers:

1. Values used:

2. Length = 1

3. Width = 1

5. Hoop pipe length = 1.571

6. Cover plastic area = 2.571

Did we solve your problem today?

Estimate the materials for a simple hoop (polytunnel) greenhouse.

The math behind it

Each hoop is a semicircle of radius = width ÷ 2: hoop length = π × radius. Plastic covers the arc × length.

20 × 12 ft → ~18.8 ft hoops.

End walls?

Add extra plastic for the gable ends.