OhMyCalc

Greenhouse Calculator

Calculate glazing surface area for a greenhouse with a gabled roof. Enter dimensions and roof pitch.

How to Use the Greenhouse Calculator

  1. Enter greenhouse length and width.
  2. Enter wall height.
  3. Enter roof pitch in degrees.
  4. Click Calculate for glazing areas.

快速参考

Small (3×2×2 m, 30°)~28 m² glazing
Medium (6×3×2.5 m, 30°)~63 m² glazing
Large (10×4×3 m, 25°)~120 m² glazing
Polycarbonate 4 mm~2.5 kg/m²
Glass 3 mm~7.5 kg/m²
Optimal pitch25–35°

使用场景

公式

Wall area = 2(L×H) + 2(W×H). Roof slope = (W/2)/cos(pitch). Roof area = 2 × slope × L. Gable area = W × rise.

常见问题

What is a good roof pitch?
25–35 degrees is typical for greenhouses to allow snow shed and maximize light.
Does this include the floor?
Floor area is shown separately; glazing total excludes the floor.
Is it free?
Yes, all calculators are completely free.