About PoultryCalc

PoultryCalc is a set of free calculators for backyard poultry keepers: coop sizing, flock capacity, incubation schedules, feed budgeting, startup costs, nesting boxes, and first-egg timing. No accounts, no apps, no fluff — enter your numbers, get your answer.

Where the numbers come from

Backyard chicken advice online is a swamp of contradicting forum posts and marketing claims. We built PoultryCalc on a stricter rule: every real-world figure in these calculators is sourced, preferably from university extension programs — Virginia Cooperative Extension, University of Minnesota Extension, Mississippi State University Extension, Colorado State University Extension, and their peers. Where extension guidance doesn't exist (per-breed laying ages, current equipment prices), we say so on the page and use widely published hatchery figures or editable defaults instead.

Each calculator's page explains exactly how its math works and names its sources, so you can check our work — and disagree with it intelligently.

What this site is not

PoultryCalc is planning guidance, not veterinary or legal advice. Space recommendations are extension minimums for healthy flocks — your climate, your breeds, and your local ordinances may demand more (or different). When a bird is sick, call a vet, not a calculator.

How the site is funded

PoultryCalc is free to use. To keep it that way, pages may display advertising and some links to products (incubators, coops, feeders) may be affiliate links — meaning we may earn a small commission if you buy through them, at no extra cost to you. Advertising never changes the math: the numbers come from the sources, not the sponsors.

Get in touch

Spotted a number that doesn't match your extension office's guidance? We genuinely want to know — that's the whole point of the site. Reach us via the contact page.