Get the numbers right before you build
PoultryCalc turns university extension guidance into simple calculators for backyard chicken keepers. No guesswork, no forum folklore — just the space, feed, and hatch numbers your flock actually needs.
Every figure is sourced — from Virginia Tech, University of Minnesota, Colorado State, Mississippi State, and other university extension programs.
Calculators
🏠 Coop Size Calculator
How big does your coop need to be? Get coop floor space, run size, roost length, and nesting box count for your flock.
Size my coop →🐔 How Many Chickens?
Have the coop already? Enter its measurements to see how many birds your space honestly supports.
Check my capacity →🥚 Incubation Calculator
Pick a species and set date to get your hatch date, lockdown day, and candling schedule.
Plan my hatch →🌡️ Brooder Temperature
What temperature should your chick brooder be? Get the target for your chicks' age and the full week-by-week heat schedule.
Set my brooder →🌾 Feed Cost Calculator
How much feed will your flock eat, and what will it cost per month and year at your local prices?
Budget my feed →💵 Startup Cost Calculator
An itemized estimate of the one-time cost to start your first flock — coop, run, brooder, birds, and gear.
Estimate my startup →🪺 Nesting Box Calculator
How many boxes do your hens need, and what size? (Fewer than you think.)
Count my boxes →🍳 First Egg Calculator
Pick your breed and hatch date to see when the first egg should arrive, across 30 common breeds.
Predict my first egg →🥚 Egg Production Calculator
How many eggs will your flock lay? Get eggs per week, month, and year from your flock size and breed.
Count my eggs →💧 Water Calculator
How much water do your chickens need each day — including in a heat wave? Size your waterer right.
Check my water →🧮 Egg Cost Calculator
Are backyard eggs actually cheaper than store eggs? Get your real cost per dozen and when the flock breaks even.
Do the egg math →