Chicken Egg Production Calculator
Flock egg counts by hens and lay rate.
What it does
Egg math starts with hens times rate. Six hens at five eggs each give thirty a week, or two and a half dozen, before gifts and sales. Yearly totals near fifteen hundred set feed budgets and carton orders.
The tool above multiplies out the flock. Defaults give 30 eggs a week with 1,560 a year. Twelve hens at six give 72 a week with 3,744 a year and 6 dozen. Rates above six need peak breeds in long light; molting flocks fall near zero for weeks.
Season moves the average. Short days cut laying without added light, heat and feed gaps cut further, and broody hens pause entirely. Age curves peak in the first two years then ease, so steady math needs seasonal rates.
This page plans counts only. It does not model feed cost, chick replacement, or predator loss. Track real baskets against the plan monthly.
How to use
- Enter the hen count.
- Enter eggs per hen each week.
- Read weekly eggs first.
- Read yearly eggs for planning.
- Read dozens for cartons.
- Adjust rate for season and molt.
Formula
- hens
- Laying hens in the flock, 1 to 1000.
- rate
- Eggs per hen each week, 0 to 7.
- 52
- 52 week year multiplier.
Steady lay rate per hen each week. At zero rate there are no eggs. Molt, light, feed, age, and broodiness move real flocks around the average.
Worked example
Example: 6 hens at 5 a week
Defaults: 6 hens at 5 eggs each a week. Rate spans 0 to 7 with molt and light.
- Inputs: 6 hens at 5 eggs each a week.
- Weekly: 6 times 5 is 30 eggs per week.
- Yearly: 30 times 52 is 1,560 eggs per year.
- Dozens: 30 / 12 is 2.5 dozen per week.
- A 12 hen flock at 6 gives 72 a week. Tool shows the same.
Reference table
| Flock | Weekly | Yearly |
|---|---|---|
| 6 at 5 | 30 eggs per week | 1,560 eggs per year |
| 12 at 6 | 72 eggs per week | 3,744 eggs per year |
| 4 at 3 | 12 eggs per week | 624 eggs per year |
| 10 at 4 | 40 eggs per week | 2,080 eggs per year |
| 3 at 7 | 21 eggs per week | 1,092 eggs per year |
Limits
- Count only. Feed and cost excluded.
- Steady rate assumed. Molt ignored.
- No loss model. Predators excluded.
- Breed differences averaged into rate.
Common mistakes
- Using peak rate for the whole year.
- Forgetting molt weeks with zero eggs.
- Counting pullets as full layers.
- Planning cartons from yearly average daily.
- Ignoring light needs in winter.
Try it yourself
Quick checks. Answers sit tucked under each question.
12 hens at 6 a week?
Weekly is 12 times 6 is 72 eggs per week. Yearly is 3,744 with 6 dozen per week.
4 hens at 3 a week?
Weekly is 4 times 3 is 12 eggs per week. Yearly is 624 with 1 dozen per week.
Questions
How are weekly eggs figured?
Hens times rate. Here 30 eggs per week.
How is yearly figured?
Weekly times 52. Here 1,560 eggs per year.
How are dozens figured?
Weekly / 12. Here 2.5 dozen per week.
What rate should I enter?
Near 4 to 6 for good layers in season, lower in molt and short days. Enter the flock rate.
Does winter cut laying?
Yes. Add light to 14 to 16 hours where allowed, plus feed and water.
Is this exact?
No. Broody hens, predators, and age shift real counts from math.