Egg Hatching Date Calculator

Enter the species and incubation start date to find your expected hatch date and key milestones: candling and lockdown.

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Expected Hatch Date

Friday, October 2, 2026

Incubation Period21 days
Candling (egg check)Friday, September 18, 2026
Lockdown (stop turning)Tuesday, September 29, 2026

Estimated timeline only. Actual duration may vary depending on breed, incubator temperature and humidity.

Track Your Hatches with Ma Petite Ferme

Plan your incubation cycles, log your hatch rates and manage your flock day to day.

Predicting the hatch date of your eggs

Successful incubation starts with good planning. Each species has its own incubation period: around 21 days for chickens, 28 for ducks and geese, and 26 to 28 for turkeys. Knowing the expected hatch date lets you manage the final days of incubation calmly.

This calculator shows you the likely hatch date based on the date you set the eggs. It also helps you identify the key moment for candling and when to stop turning the eggs a few days before hatching.

Well-monitored incubation significantly increases hatch rates. Stable temperature, humidity, and regular turning are the three factors that make the difference between a successful hatch and a disappointing one.

How is the date calculated?

The calculator adds the average incubation period for the chosen species to your set date to estimate the hatch date. This duration is a guide: a few hours' variation is normal depending on egg freshness and temperature consistency.

Tips for successful incubation

  • Maintain a stable temperature (around 37.5 °C for chickens) throughout incubation.
  • Monitor humidity and increase it during the final days to ease hatching.
  • Turn the eggs several times a day until the recommended stop point before hatching.
  • Candle the eggs around the midpoint of incubation to remove any that are not developing.

Frequently asked questions about incubation

How many days does it take to hatch a chicken egg?

Around 21 days at a stable temperature of 37.5 °C. Other species have different incubation periods, which the calculator takes into account.

When should I stop turning the eggs?

Generally 2 to 3 days before the expected hatch date, to allow the chick to position itself correctly.

What is egg candling?

It involves holding the egg up to a light source to check embryo development and remove any unfertilised eggs.

Is humidity important?

Yes, humidity that is too low or too high will harm the hatch. It is often increased during the final days of incubation.