About

About Coop Planner

Coop Planner helps backyard chicken owners estimate practical coop space, run space, nesting boxes, roost length, and common footprint options before buying or building a coop.

The calculator is built for planning, not for legal, veterinary, or permitting advice. Local rules, breed behavior, climate, flock temperament, predators, and management practices can change what works in a real backyard.

How The Calculator Works

The tool uses transparent planning formulas and common backyard poultry guidance. It separates indoor coop space from outdoor run space, then adjusts recommendations for bird size, daytime access, climate, and future expansion.

The core baseline for standard backyard chickens is about 4 square feet of indoor coop area and 10 square feet of outdoor run area per bird. The calculator then layers in practical requirements such as nesting boxes, roost length, ventilation area, feed, water, and a starter footprint.

What We Count

Coop Planner counts usable bird space. Storage shelves, feed bins, service aisles, blocked nest-box space, and permanent fixtures should not be treated as open floor area. This is why many guides on the site distinguish between a theoretical maximum and a roomier everyday fit.

Editorial Approach

We prefer clear assumptions, conservative planning ranges, and source notes from university Extension or education resources where possible. The goal is to help first-time and small-flock owners make better decisions before spending money on materials or a prebuilt coop.

Articles are reviewed for internal consistency with the calculator assumptions, then linked back to source context from Extension-style poultry housing guidance where the topic calls for it. When a topic depends on local law, animal health, electrical work, or severe weather, the page states that the guide is a planning aid rather than professional advice.

Current Priorities

Last updated June 14, 2026. The current content focus is improving answer-first coop sizing pages, footprint guides, and practical layout checks so readers can compare real usable space before building or buying.