Chicken Egg Incubation Calculator
Calculate the expected hatch date and candling schedule for incubating chicken eggs.
Pregnancy Parameters
Enter the start date of gestation.
Estimated Hatch Date
KEY MILESTONES
Expert Tip
Incubator temperature should be kept at 99.5°F (37.5°C) with 45-50% humidity. Raise humidity to 60-65% on day 18 (lockdown) and stop turning.
Calculation Methodology & Details
Gestation Formula
Chicken eggs require exactly 21 days of incubation at standard temperature and humidity. Hatching usually completes between days 20 and 22.
Clinical Considerations
Gestation durations can vary based on animal breed, age, litter size, and genetic factors. If you observe signs of distress or if delivery departs significantly from the calculated date, consult a veterinarian immediately.
How to Calculate Hatch Date: Step-by-Step
Plan your incubation timeline using these steps:
Note the Set Date
Note the exact day and time you place the eggs inside the warmed incubator.
Add 21 Days
Add 21 days to find the expected hatching day.
Mark the Lockdown Date
Subtract 3 days from the hatch date (Day 18) to start the incubator lockdown.
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