Chicken Feed Quantity Calculator
Planning how much feed to buy is simple arithmetic once you know how much each bird eats. A typical adult laying hen eats roughly a quarter pound (about 0.25 lb or 110 to 120 grams) of complete feed a day, but intake varies with breed, size, weather, and foraging, so per-bird intake is an editable input here. Enter your flock size, the per-bird daily intake, the number of days you are planning for, and your feed bag size. The calculator returns daily, weekly, and total feed needed, plus how many bags that works out to. Choose the correct feed type for the birds' life stage separately.
About 0.25 lb (110 to 120 g) for a typical adult layer.
Chicken feed formula
Daily feed = birds * per-bird daily intake
Weekly feed = daily feed * 7
Total feed = daily feed * days
Bags needed = total feed / bag size
All weights are in pounds. Bags needed is left as a decimal so you can round up to the next whole bag when buying.
Feeding context
- A typical adult layer eats about a quarter pound of complete feed per day.
- Cold weather raises intake; foraging birds eat less complete feed.
- Layers need added calcium; chicks and growers need different rations.
- Store feed cool, dry, and rodent-proof, and use it before its date.
- Round bags up when purchasing to avoid running short.
Chicken feed: frequently asked questions
How much feed does a chicken eat per day?
A typical adult laying hen eats roughly a quarter of a pound (about 0.25 lb, or 110 to 120 grams) of complete feed per day, but this varies with breed, body size, weather, and whether birds also forage. Because it varies, per-bird daily intake is an editable input in this calculator, not a fixed figure.
How do I calculate total feed for my flock?
Multiply the number of birds by the per-bird daily intake to get daily feed, then multiply by the number of days. This calculator also divides the total by your feed bag size to estimate how many bags you need over the period.
Does feed intake change with the seasons?
Yes. Birds generally eat more in cold weather to maintain body temperature and may eat slightly less in extreme heat. Foraging birds with pasture access eat less complete feed. Adjust the per-bird intake to reflect your conditions.
What feed should laying hens get?
Adult layers are typically fed a complete layer ration with added calcium for eggshell formation. Chicks and growers need starter and grower feeds with different protein levels. This calculator handles quantity only; choose the correct feed type for the birds' life stage.
How should I store bulk feed?
Keep feed in a cool, dry, rodent-proof container and use it before the date on the bag, as nutrient quality and palatability decline over time. Buying only what you will use within a few weeks reduces waste and spoilage.
Official sources
- eXtension Poultry community of practice: Poultry feeding and management.
- Penn State Extension: Poultry and small flocks.
Reviewed by the CalculatorHub team, edited by James Graham, 17 June 2026. See our methodology.