Chicken Calculators
Free, no sign up tools for planning and running a backyard flock. Each one uses the same rules of thumb experienced keepers rely on, applied to your exact flock size, coop dimensions and climate, with a full guide underneath explaining the numbers.
Coop size by flock size
Already know how many birds you want? These guides give the exact coop square footage, run size, nest boxes, roost length, feed and egg numbers for that flock.
Which calculator should you start with?
If you are still planning, start with coop and run space. Space per bird drives almost every other decision, including how much bedding you buy, how much ventilation the building needs and how many nest boxes and feet of roost bar to build.
Planning a new coop
Work through the coop size planner, then the run size, ventilation, nest box and roost length calculators in that order. Together they produce a build list before you buy a single board.
Running an existing flock
The feed, waterer and bedding calculators cover your recurring costs. The egg production predictor and cost per dozen calculator tell you what the flock returns.
Free to embed
Every calculator here is also available as a free embeddable widget for your own blog or club site. Grab a snippet from the widget directory.