Chicken Feed Calculator: the complete guide
Feed is the single biggest running cost of keeping chickens, and almost everyone underbuys or overbuys their first few bags. This calculator turns flock size, bird age, season and free ranging into a straight answer: pounds per day, bags per month, and dollars per year.
How the chicken feed calculator works
- A standard laying hen eats roughly 0.25 lb (about 113 g) of feed per day. Bantams eat around half that, and heavy dual purpose breeds a little more.
- Chicks are scaled by age. A one week old chick eats a fraction of an adult ration and climbs steadily toward full intake around 18 weeks.
- Season adjusts intake. Birds eat more in cold weather to hold body temperature and slightly less in high summer heat.
- Free range hours reduce purchased feed, because foraged bugs and greens replace part of the ration. Heavy foraging can cut feed use by 20 to 40 percent in good pasture.
- Cost comes from your own bag price and bag weight, so the result reflects local prices instead of a national average.
How to use it
- Enter the number of adult birds, then the number of chicks and their age in weeks.
- Pick the feed type you actually buy: starter, grower, layer or all flock.
- Enter your bag price and bag weight from the last receipt or feed store shelf.
- Set free range hours per day and whether you give treats or scraps.
- Choose the season you are planning for, then read the daily, monthly and yearly totals.
Step by step examples
Six laying hens, no free ranging
Six hens at 0.25 lb per day is 1.5 lb per day, about 45 lb per month. That is just under one 50 lb bag. At $22 per bag the flock costs roughly $20 per month, or $240 per year.
Twelve hens with four hours of pasture
Twelve hens would eat 3 lb per day confined. Four hours of good foraging trims that by about 20 percent, so 2.4 lb per day, near 72 lb per month, or roughly 1.5 bags.
Recommended values
| Item | Value | Notes |
|---|---|---|
| Laying hen, standard breed | 0.25 lb per day | About 1.75 lb per week |
| Bantam | 0.12 lb per day | |
| Heavy breed (Brahma, Jersey Giant) | 0.30 lb per day | |
| Chick, 0 to 6 weeks | 0.05 to 0.12 lb per day | Starter crumble, 20 to 22 percent protein |
| Winter adjustment | +10 to 15 percent |
Common mistakes
- Buying more than a month of feed at once. Feed loses vitamin potency and attracts rodents after about 30 days.
- Counting scraps as a real part of the ration. Treats should stay under 10 percent of intake or laying drops.
- Feeding layer feed to chicks or roosters. The calcium load damages developing kidneys.
- Forgetting grit and oyster shell, which are offered free choice and are not part of the feed total.
- Using an open trough. Spillage and rodents can waste 15 to 30 percent of every bag.
Frequently asked questions
How much feed does a chicken eat per day?
A standard laying hen eats about 0.25 lb (113 g) of layer feed per day, roughly 1.75 lb per week. Bantams eat about half; heavy breeds slightly more.
How much does it cost to feed a chicken per month?
At typical US layer feed prices of $20 to $30 per 50 lb bag, one hen costs about $4 to $7 per month. Free ranging can cut that by 20 to 40 percent.
Do chickens eat more in winter?
Yes. Cold birds burn calories to stay warm, so expect 10 to 15 percent higher intake once temperatures drop below freezing.
Should I feed free choice or measured portions?
Free choice from a hanging feeder works for most backyard flocks. Measured feeding only helps if birds are overweight or you are managing feed costs tightly.
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What next?
Free tools that pair well with this calculator.