Chicken incubation guide
How long do chicken eggs take to hatch?
Chicken eggs take about 21 days to hatch. Most hatch between day 20 and day 22, depending on breed and how steady the incubator temperature was. Breed shifts the date by a few days, which is why the calculator asks for it.
Quick rule: Count 21 days from the day you set the eggs. Lockdown starts 3 days before that.
How to use the chicken egg incubation calculator
1. Enter the date eggs were set. The day the eggs went into the incubator or under the hen. Tap Use today if it was today.
2. Pick the breed. The whole window moves with the breed average.
Then follow the schedule. Each task gets a real date, the next one is highlighted, the status shows whether chicken eggs are on track, and the day by day cards above show where things stand. Use Copy schedule or Add to Google Calendar to keep it.
Hatch date formulas
- Estimated hatch date = date eggs were set + 21 days
- Earliest normal hatch = date eggs were set + 20 days
- Latest normal hatch = date eggs were set + 22 days
- Lockdown = hatch date minus 3 days
- Candle any unhatched eggs if nothing has happened by day 23
Hatch schedule at a glance
| When | Task | Why |
|---|---|---|
| Day 7 | First candling | Remove clear eggs that show no veins. Fertile eggs show veins and a dark spot. |
| Day 14 | Second candling | Remove eggs that stopped developing. Look for no movement or a blood ring. |
| 3 days before hatch | Lockdown | Stop turning, raise humidity to about 65 to 70 percent, and keep the lid closed until hatching is over. |
Signs the eggs are about to hatch
Hatching is close if you see
- ✓Peeping heard from inside the egg
- ✓A small crack or hole in the shell (the pip)
- ✓Eggs rocking or moving on their own
- ✓A line of cracks around the wide end (zipping)
Step in or get advice if
- !A chick has pipped but made no progress for 24 hours
- !You see fresh blood in the membrane (stop and wait)
- !The membrane has dried and is stuck to the chick
- !No pips by day 23: candle before you discard any eggs
Chicken incubation by breed
| Breed or type | Average | Normal window from the start date |
|---|---|---|
| Standard breeds | 21 days | 20 to 22 days |
| Bantams | 20 days | 19 to 21 days |
Frequently asked questions
How long do chicken eggs take to hatch?
Chicken eggs hatch in about 21 days, with most hatching between day 20 and day 22. Breed matters: Standard breeds about 21 days, Bantams about 20 days.
How accurate is this calculator?
It uses the average length and the normal range published in veterinary references, adjusted for the breed you pick. Individual animals vary, so treat the date as the middle of a window, not a promise.
When should I candle the eggs?
First candling around day 7. Remove clear eggs that show no veins. Fertile eggs show veins and a dark spot.
What is lockdown?
Lockdown is the last 3 days before the hatch. Stop turning the eggs, raise the humidity and keep the incubator closed so the chicks can position themselves and hatch.
Should I help a chick out of the shell?
Usually not. Hatching can take 12 to 24 hours after the first pip. Only step in if there has been no progress for a full day, and get advice first.
Is my data saved?
No. Everything is calculated in your browser. Nothing you type is stored or sent anywhere.
Disclaimer: This calculator gives estimates for planning only. It is not veterinary advice and cannot replace an examination by your vet. If you are worried at any stage, especially around the hatch, contact your vet promptly.
