How Many Chickens Do I Need?
How Many Chickens Do I Need?
Work backwards from breakfast. Tell the calculator how many eggs your household eats each week and how well your chosen breeds lay, and it gives you the flock size — plus the extra buffer hen experienced keepers swear by.
Your household needs about 20 eggs a week (86.7 dozen a year).
Your flock size
Why the extra hen? Hens stop laying while moulting, go broody in spring, and slow down in winter. One buffer hen keeps eggs coming through all of it — most keepers are glad they added her.
How it works
The formula is: hens needed = your weekly eggs ÷ eggs laid per hen per week, rounded up. Laying rates come from typical breed performance used in extension poultry guides: hybrid layers around 6 eggs a week, standard dual-purpose breeds around 5, and heritage breeds around 4 in their prime laying years.
We then recommend one buffer hen on top. Hens pause laying while moulting, some go broody and stop for weeks, and everyone slows down in winter. The buffer hen is the difference between “usually enough eggs” and “eggs every week”. The coop and run figures shown use the standard allowance of 3.5 sq ft of coop and 10 sq ft of run per bird — see the chicken coop size calculator to plan the build properly.
Hens needed by weekly egg target
| Eggs wanted per week | Heavy layers (6/wk) | Average layers (5/wk) | Light / heritage (4/wk) |
|---|---|---|---|
| 10 eggs | 2 hens | 2 hens | 3 hens |
| 20 eggs | 4 hens | 4 hens | 5 hens |
| 30 eggs | 5 hens | 6 hens | 8 hens |
| 40 eggs | 7 hens | 8 hens | 10 hens |
| 50 eggs | 9 hens | 10 hens | 13 hens |
| 60 eggs | 10 hens | 12 hens | 15 hens |
Minimum hens, before the buffer hen. Add 1 to whichever column matches your breeds for a flock that keeps laying through moulting season.
Frequently asked questions
How many chickens do I need for a dozen eggs a week?
For 12 eggs a week: 2 heavy layers (at 6 eggs each), 3 average layers (at 5 each), or 3 light/heritage layers (at 4 each). Add one buffer hen and most households should start with 3–4 hens for a reliable dozen a week.
How many hens does a family of four need?
If each person eats about 5 eggs a week, a family of four needs 20 eggs a week. That is 4 average-laying hens at minimum, and 5 with a buffer hen — the most common starting flock size for a family.
How many eggs does one hen lay per week?
It depends on breed and age. Heavy-laying hybrids average about 6 eggs a week in their first two years, most dual-purpose backyard breeds about 5, and heritage or ornamental breeds about 4. All hens slow down in winter and during their yearly moult.
Do I need a rooster for hens to lay eggs?
No. Hens lay eggs whether or not a rooster is present — a rooster is only needed if you want fertile eggs for hatching chicks. Many suburbs and towns allow hens but not roosters, and your egg supply is unaffected.
Why does the calculator add a buffer hen?
Because laying is not constant. Each hen stops for several weeks a year to moult, may go broody in spring, and lays less in short winter days. One extra hen smooths out those gaps so your household rarely runs out of eggs.
When do young hens start laying?
Most pullets start laying at 18–24 weeks old, depending on breed and season. If you are raising chicks rather than buying point-of-lay hens, plan for roughly five months before the first egg.