AnimalCalculators.comSmart Science & Pet Tools
Poultry • productionVerified Scientific Formula

Hen-Day & Hen-Housed Egg Production Calculator

Computes Hen-Day and Hen-Housed egg production percentages and daily egg mass output for layer flocks.

Enter Parameters

g
Calculated Output
Hen-Day Egg Production
92%HDEP87.6% Hen-Housed (HHEP)
What This Result Means
Your flock achieved 92% Hen-Day production (87.6% Hen-Housed), generating 570.4 kg of total daily egg mass.
Calculation Details & Practical Equivalents
Hen-Day Egg Production (HDEP)
92%
Hen-Housed Egg Production (HHEP)
87.6%
Total Daily Egg Mass
570.4 kg
Egg Mass per Live Hen
57 g/hen/day

Formula & Mathematical Methodology

Standard Mathematical Formula
Hen-Day Production (%) = [Total Eggs ÷ Live Hens] × 100 | Hen-Housed Production (%) = [Total Eggs ÷ Initial Hens Housed] × 100

Formula Variables Defined

EggsTotal Eggs Collected(eggs)

Daily egg count

Live HensPresent Living Hens(birds)

Current count of live birds

Housed HensInitial Hens Housed(birds)

Initial flock size at placement

Step-by-Step Calculation Example

Example: 10,000 Hen Layer House

9,200 eggs collected today from 10,000 live hens (10,500 originally housed).

  1. HDEP = (9,200 ÷ 10,000) × 100 = 92.0%
  2. HHEP = (9,200 ÷ 10,500) × 100 = 87.6%
Final Output: 92.0% Hen-Day Egg Production

Key Assumptions

  • Includes all intact collectible eggs.

Biological Limitations

    Verified Scientific & Veterinary Sources

    Version: 1.0•Methodology Reviewed: 2026-01-20
    1. Poultry Development Review: Production Performance Standards & Efficiency Metricsgovernment
    Food and Agriculture Organization (FAO) of the United Nations (2018). FAO Animal Production and Health Guidelines
    Access Source Authority

    Hen-Day & Hen-Housed Egg Production Calculator — FAQs

    Hen-Day reflects the daily laying rate of living birds currently in the house, whereas Hen-Housed measures total lifetime flock efficiency by factoring in bird mortality.

    Related Calculators & Tools

    All Poultry Calculators
    Poultry
    Broiler Feed Conversion Ratio (FCR) Calculator

    Calculates the Feed Conversion Ratio (FCR), feed efficiency percentage, and feed cost per unit of live gain for broiler chickens and meat birds.

    Calculate
    Poultry
    European Production Efficiency Factor (EPEF / EPEI) Calculator

    Computes the standard international benchmark metric combining flock livability, market weight, cycle length, and FCR into a single index score.

    Calculate