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Chicken Feed Calculator

Plan your flock's feed requirements and budget by breed, age, and season

Monthly Feed

50 lbs

Bags/Month

2

Monthly Cost

$36

Monthly Feed Required

50

pounds per month

Daily (per bird)

0.280 lbs

Daily (total)

1.68 lbs

50-lb Bags/Month

2

Monthly Cost

$36

Supplements Needed

Oyster Shell (monthly)1.8 lbs
Grit (monthly)1 lbs

Cost Breakdown

Monthly Feed$36
Annual Feed$432

Feeding Tips

Feed type by age: Chicks need starter feed (20–22% protein), pullets need grower (16–18%), layers need layer feed (16% + calcium).
Winter feeding: Chickens eat 10–15% more in winter to maintain body heat. Add scratch grains as an evening snack for extra warmth.
Oyster shell: Laying hens need supplemental calcium (4–5g/day) for strong eggshells. Offer free-choice in a separate dish.

Example Calculations

1Small Backyard Flock (6 Layers)

Inputs

Chickens6
BreedStandard Layer
AgeLaying Hen
SeasonSummer
Feed Cost$18/bag

Result

Monthly Feed50 lbs
Bags per Month1
Monthly Cost$18
Annual Cost$216

Six laying hens eat 0.28 lbs each per day = 1.68 lbs/day total. Monthly: 1.68 × 30 = 50.4 lbs, requiring 1 bag of 50-lb feed at $18.

2Broiler Flock in Winter

Inputs

Chickens12
BreedBroiler
AgeLaying Hen
SeasonWinter
Feed Cost$20/bag

Result

Monthly Feed133 lbs
Bags per Month3
Monthly Cost$60
Annual Cost$720

Twelve broilers eat 0.33 lbs/day × 1.12 (winter) = 0.37 lbs/bird/day. Total: 4.44 lbs/day × 30 = 133 lbs, needing 3 bags at $20 each.

3Bantam Flock

Inputs

Chickens8
BreedBantam
AgeLaying Hen
SeasonSummer
Feed Cost$18/bag

Result

Monthly Feed41 lbs
Bags per Month1
Monthly Cost$18
Annual Cost$216

Eight bantam layers eat 0.17 lbs each per day = 1.36 lbs total. Monthly: 1.36 × 30 = 40.8 lbs ≈ 41 lbs, fitting in one 50-lb bag.

Frequently Asked Questions

Q

How much feed does a chicken eat per day?

A standard laying hen eats about 0.25-0.33 pounds (4-5 ounces) of feed per day. Bantams eat less at 0.15-0.20 lbs/day, while broilers eat more at 0.33-0.50 lbs/day. This translates to roughly 1.5-2 lbs per bird per week for layers.

  • Standard layer: 0.25–0.33 lbs/day (~4–5 oz)
  • Bantam: 0.15–0.20 lbs/day (~2.5–3 oz)
  • Broiler/meat bird: 0.33–0.50 lbs/day (~5–8 oz)
  • Chick (0–8 weeks): 0.05 lbs/day (~0.8 oz)
  • Winter increases consumption by 10–15% for body heat
Breed TypeDaily FeedWeekly FeedMonthly Feed
Standard Layer0.28 lbs2.0 lbs8.4 lbs
Bantam0.17 lbs1.2 lbs5.1 lbs
Broiler0.33 lbs2.3 lbs9.9 lbs
Dual-Purpose0.30 lbs2.1 lbs9.0 lbs
Q

How much does it cost to feed chickens per month?

For a flock of 6 standard layers, expect to spend $18-25 per month on feed at typical feed store prices of $16-20 per 50-lb bag. Annual costs run $200-300 for a small backyard flock, with winter months slightly higher due to increased consumption.

  • 6 layers: ~1 bag (50 lbs) per month = $16–20
  • 12 layers: ~2 bags per month = $32–40
  • Add $3–5/month for oyster shell and grit
  • Free-ranging reduces feed costs by 20–30%
  • Organic/non-GMO feed costs 2–3x more ($30–40/bag)
Q

Do chickens need oyster shell and grit?

Laying hens need supplemental oyster shell (4-5 grams per day) for calcium to form strong eggshells. All chickens need grit (small stones) to grind food in their gizzard. Offer both free-choice in separate containers so birds can self-regulate intake.

  • Oyster shell: 4–5g per layer per day for eggshell calcium
  • Grit: ~1 lb per 10 birds per month (insoluble granite grit)
  • Chicks under 8 weeks: use chick-sized grit, no oyster shell needed
  • Free-range birds may find natural grit but supplement to be safe
  • Layer feed has some calcium (3–4%) but oyster shell adds the extra 1–2% needed
Q

What type of feed do chickens need at each age?

Chickens need different feed formulations at each life stage. Chicks (0-8 weeks) need starter with 20-22% protein, pullets (8-18 weeks) need grower with 16-18% protein, and layers need layer feed with 16% protein plus added calcium for egg production.

  • Starter (0–8 weeks): 20–22% protein, medicated or non-medicated
  • Grower (8–18 weeks): 16–18% protein, transition feed
  • Layer (18+ weeks): 16% protein + 3.5–4% calcium for eggshells
  • Broiler starter/grower: 22–24% protein for rapid growth
  • Never give layer feed to chicks — excess calcium damages developing kidneys
Q

Do chickens eat more in winter?

Yes, chickens eat 10-15% more feed in winter because they burn extra calories to maintain body temperature. In cold climates, provide scratch grains as a late-afternoon snack — the digestion process generates heat that helps chickens stay warm overnight.

  • Winter consumption increases 10–15% above summer baseline
  • Corn scratch grains: feed in late afternoon for overnight warmth
  • Ensure unfrozen water access — dehydration reduces feed intake
  • Supplemental lighting (14–16 hrs) maintains egg production
  • Warm oatmeal treats boost calories without overfeeding

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Last Updated: Mar 9, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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