Feed cost by age calculator
How much does your flock eat between hatching and laying – and what does that feed cost in total? This tool follows a commercial hybrid’s published intake curve, week by week, so you can budget before you buy.
Your numbers
Your results
- Feed per bird per day
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- Flock feed per week
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- Flock feed cost per week
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- Stage
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- Feed eaten per bird
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- Feed cost per bird
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- Feed cost for the flock
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Guide figures, not a promise.
Where these figures come from
The weekly intake curve follows the published ISA Brown figures (a common commercial brown-egg hybrid) for alternative housing (free-range and barn systems) under good management:
- Rearing table, weeks 1-18. Feed intake per bird per day rising from about 10-12 g (week 1) to 89-91 g (week 18), with cumulative intake of about 6.57-6.82 kg per bird by point of lay. Source: ISA Brown EU Product Guide – alternative housing (Hendrix Genetics), checked 12 October 2026.
- Laying table, weeks 18-100. Feed intake per bird per day rising from 90 g (week 18) to a 130 g plateau from about week 31, in line with the same guide and its summary average of 125-127 g per day.
- Why a hybrid curve. ISA Brown is one of the most common commercial brown-egg hybrids in the UK. Backyard and heritage flocks differ; treat this as a planning baseline and replace with your own records when you have them. This tool is not a feeding recommendation – ask a poultry vet or feed supplier for ration advice.
Feed price is whatever you type; it includes nothing else – no bedding, housing, labour or losses.
More free tools: work out your cost per egg, find your break-even flock size, or read the Feed Cost Playbook and print the weekly record sheet.
Live UK feed and egg prices, kept up to date every month from the DEFRA datasets, are on the Fynbrex Egg & Feed Index.
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