Egg Production Estimator: How Many Eggs Will Your Flock Lay?

How many eggs your hens lay depends on four things: the breed, the age of the hens, the time of year, and how well they are managed. The Egg Production Estimator gives you a reliable forecast for your flock by combining breed-specific annual rates with production year adjustments and a non-laying allowance for moulting, broodiness, and illness.

Four breed categories reflect the wide range of laying performance: high-production hybrids (Lohmann Brown, ISA Brown — 310 eggs per year), dual-purpose breeds (Rhode Island Red, Sussex — 260 eggs per year), traditional breeds (Marans, Wyandotte, Leghorn — 190 eggs per year), and heavy or ornamental breeds (Orpington, Silkie — 130 eggs per year).

Production year adjustments reflect the natural decline in laying rate over a hen's life: year one hens lay at 100% of their breed rate, year two at 85%, year three and beyond at 65%. A mixed flock defaults to 85%. A non-laying allowance (default 5%) accounts for hens temporarily out of lay.

Results include eggs per day, per week, per month, and per year, plus dozens per year and a human-scale callout showing how often you can expect a full box of six. A seasonal note explains that winter production without supplemental lighting typically drops by 40% due to reduced daylight hours.

Annual egg production figures are drawn from Lohmann Animal Health breed documentation, AHDB Eggs production data, and Wisconsin Extension poultry lifecycle research. Year-on-year production decline rates follow standard laying flock management literature, with year-two birds producing approximately 85% of peak-year output.

Enter the number of hens in your flock. Select the breed category that best matches your birds. Select the production year (year one for pullets in their first season, year two for second-season hens). Adjust the non-laying allowance if you have a higher proportion of hens currently moulting or broody. Results update automatically as you type.