Why CoopCalcs?
Most chicken-keeping advice comes as rules of thumb scattered across forums: "4 square feet per bird," "a quarter pound of feed a day," "21 days to hatch." All roughly true — and all of them shift with breed size, climate, free-ranging, and flock age. CoopCalcs turns those rules into calculators that account for the variables, so you get numbers for your flock, not a generic one.
Every tool explains the math behind it, cites the assumptions used, and works on your phone in the feed store aisle. No accounts, no downloads, no spam.
Start with the right question
- Before you get chickens: use the Coop Size Calculator above to size your build, then the Feed Cost Calculator to budget monthly costs.
- Already keeping hens: check the Egg Production Estimator to see whether your flock's laying is normal for its breeds and age.
- Hatching your own: the Incubation Calculator builds your day-by-day schedule from the moment you set eggs.