Outdoor Area Measurement Calculator

Overview

Calculates area and perimeter for rectangles, circles, triangles, or up to four rectangular sections, with optional volume from depth.

Assumptions

• Triangle area uses three valid side lengths.
• Irregular area is the sum of supplied rectangles; its perimeter is measured separately.

Worked example

A 20 × 10 ft rectangle is 200 sq ft and has 60 ft perimeter; at 3 in depth, volume is 50 cu ft.

Common mistakes

• Using a diagonal as rectangle length.
• Double-counting overlaps among irregular sections.

Limitations

It cannot validate a complex boundary or produce a survey-grade measurement.

Safety and local requirements

Measure from a safe location and call before placing stakes where utilities may be present.

Sources

• EPA — Soak Up the Rain