Poultry Incubation & Hatch Date Calculator

What This Calculator Does

This avian incubation and hatch date calculator generates a complete embryological incubation calendar for 10 poultry and gamebird species, including chickens, ducks, turkeys, quails, and geese. It computes exact hatch dates, lockdown milestones, and candling schedules.

How to Use This Calculator

Select your bird species, incubator type (forced-air with fan vs still-air), and the day eggs were set. The calculator displays the countdown to hatch, exact lockdown day, recommended setter and hatcher temperature setpoints, and optimal humidity ranges.

Key Factors That Affect the Result

• Critical lockdown milestone: Three days before hatch (Day 18 for chickens, Day 25 for ducks/turkeys), you must cease egg turning, place eggs on hatching mats, and raise relative humidity to 65–75% to prevent the inner shell membrane from shrink-wrapping the pipping chick.
• Temperature precision: Forced-air incubators circulate heat uniformly at 99.5°F (37.5°C), while still-air incubators lack fans and must be kept at 101.5°F (38.6°C) measured at the top of the egg.
• Egg turning requirements: Eggs must be turned at least 3 to 5 times daily during the setter phase to prevent the developing embryo from adhering to the inner shell membrane.
• Candling viability checks: Candle eggs on Day 7 to remove infertile clears and Day 14 to monitor air cell expansion.

Why This Matters for Your Poultry

Precise temperature and humidity management directly determines embryonic survival, pipping strength, and hatchability rates. Maintaining the correct schedule prevents late-stage embryonic death and weak, sticky chicks.