How much feed does an adult laying hen eat per day?

According to Oklahoma State University Extension and Mississippi State University Extension, mature laying hens consume approximately 0.25 lb (roughly 113 g) of feed per day under temperate conditions. Depending on bird body weight, egg production rate, and ambient temperature, typical adult layer intake ranges from 0.25 to 0.33 lb per day.

How much feed do developing chicks require?

Oklahoma State University Extension notes that chicks consume an average of roughly 0.10 lb per day across the brooding and rearing period, totaling approximately 13 to 15 lb of complete starter and grower feed per bird before the onset of egg lay.

How does the calculator determine 30-day bag needs?

Monthly feed is calculated over a standardized 30-day planning cycle (Flock Size × Per-Bird Daily Intake × 30). Exact bags needed equals total 30-day feed divided by bag weight. Bags to purchase rounds up to the next whole bag (ceil) because retail feed is purchased in whole units.

What is the difference between consumption value and purchase outlay?

Consumption value represents the exact financial value of feed eaten in 30 days (Exact Bags × Price per Bag). Purchase outlay represents the upfront cost to buy the necessary whole bags (Whole Bags to Purchase × Price per Bag). Any difference accounts for leftover feed carried into the subsequent month.

When should flocks transition between feed formulations?

University of Georgia Extension guidelines recommend chick starter from hatch to approximately 6 weeks of age, grower ration from 6 to 18 weeks, and layer ration starting at 18 weeks of age when hens begin egg development. Complete diets should match life stage to ensure appropriate nutrient balance.

Should scratch grain or treats replace complete feed?

Oregon State University Extension cautions that complete commercial rations are formulated with balanced vitamins, minerals, and amino acids. Heavy supplementation with scratch grains or table scraps dilutes the bird’s nutrient intake, lowers egg production, and can lead to obesity or calcium deficiencies.

Chicken Feed Calculator

Enter flock size, daily intake rate per bird, bag weight, and optional bag price to calculate daily, weekly, and 30-day feed totals, bag lifespan, and purchase outlays.

Flock & Feed Parameters

Number of Birds *

Whole number between 1 and 10,000 birds.

Feed Intake per Bird / Day (lb) *

OSU & MSU Extension baseline: ~0.25 lb/day (range 0.25–0.33 lb for adult layers).

Feed Bag Net Weight (lb) *

Price per Bag ($) (optional)

Leave blank if only calculating feed weight and bags.

Enter Flock Parameters

Provide your flock size and daily intake rate to calculate feed weight, bag longevity, and replenishment planning.

Feed Consumption Plan

Calculated on 7-day week & 30-day planning month

Planning estimate

Daily Flock Feed

—

— g

Weekly (7 Days)

—

— g

Monthly (30 Days)

—

— g

1 Bag Lasts

—

days / bag

Exact Bags / 30 Days

—

bags consumed

To Purchase (30 Days)

—

whole bags (ceil)

Unit Relationships & Intake Limitations

• Metric Conversion: Standard international avoirdupois pound conversion is 1 lb = 453.59237 grams (exact).

• Planning Baseline: Monthly volume is projected across a standardized 30-day budget window. Whole bag replenishment follows the ceil function because commercial feed is distributed in intact retail packaging.

• Consumption Variance: Individual hen intake fluctuates with breed body size, ambient coop temperatures, active egg laying intensity, and foraging access. Agricultural extension authorities document mature layer ranges from 0.25 to 0.33 lb/day. Verify label specifications on your selected feed brand.

• Formulation Stages: University of Georgia and Oregon State University Extension recommend starter rations from 0–6 weeks, grower rations from 6–18 weeks, and complete layer rations starting at 18 weeks. Always maintain free-choice access to clean drinking water.

Summary

Enter flock size, daily intake rate per bird, bag weight, and optional bag price to calculate daily, weekly, and 30-day feed totals, bag lifespan, and purchase outlays.

How it works

Enter the number of birds in your flock (whole integers from 1 to 10,000).
Select a verified intake preset (0.25 lb/day for laying hens, 0.10 lb/day for chicks) or enter a custom per-bird daily rate from your feed label.
Specify the net weight of your feed bag (e.g., 50 lb, 40 lb, or 25 lb).
Optionally input the retail price per bag to compute unit cost, monthly consumption value, and initial purchase outlay.
Click Calculate to view feed volume (in pounds and grams), bag longevity, and replenishment totals.

Use cases

Determine how many whole bags of layer ration to buy for a 30-day planning cycle.
Calculate how many days a 50 lb bag of feed will last a given flock size.
Budget monthly poultry feed expenses based on bag retail pricing.
Plan feeding requirements when brooding chicks or expanding flock numbers.
Compare consumption between standard layer baselines and seasonal label recommendations.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu