Layer Egg Production Calculator

Work out layer egg production instantly with clear inputs, formula shown and shareable results.

About Layer Egg Production Calculator

Hen-day production is eggs collected as a percentage of hens alive that day, the standard laying performance measure. Egg mass per hen per day — production rate times egg weight — is a better index than egg number alone, because it captures the shift to fewer but heavier eggs in late lay.

Formulas

Hen-day production

HDEP % = eggs collected x 100 / hens present

Egg mass

Egg mass (g/hen/day) = eggs x egg weight / hens

Worked example

With the default values below, Layer Egg Production Calculator returns Hen-Day Egg Production of 86.00%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Hens In The Flockminimum 1: 10,000
Eggs Collectedminimum 0 per day: 8,600 per day
Periodminimum 1 days: 30 days
Average Egg Weightminimum 1 g: 58 g

Results

Hen-Day Egg Production: 86.00%
Eggs In The Period: 258,000
Egg Mass Per Hen Per Day: 49.88
Trays Of 30 Per Day: 286.7

Step by step

1Values used
2Hen-day production
3Egg mass
4Hen-Day Egg Production= 86.00
5Eggs In The Period= 258,000
6Egg Mass Per Hen Per Day= 49.88
7Trays Of 30 Per Day= 286.7

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or fees or charges into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What is a good peak production rate?

Modern commercial layers peak at 93-96% around 26-30 weeks and should hold above 90% for several months before declining to 75-80% by 72 weeks.

Hen-day or hen-housed production?

Hen-day divides by live birds and measures the performance of survivors. Hen-housed divides by the original number placed and captures mortality too, so it is the better commercial measure.