Feed Conversion Ratio (FCR) Calculator
FCR tells you how many kg of feed your birds need to gain 1 kg of body weight. It is the single most important number in broiler farming — feed is 60–70% of your total cost.
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FCR
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Rating
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Feed per bird (kg)
Tools for tracking flock performance
Disclosure: links below are affiliate links — buying through them supports this free tool at no extra cost to you.
Digital hanging scale (50 kg)
Weigh feed bags and sample birds — you can't improve an FCR you don't measure.
Automatic poultry feeder
Reduces feed spillage, one of the biggest hidden FCR killers.
What is a good FCR?
| Bird type | Excellent | Average | Poor |
|---|---|---|---|
| Broiler (30–35 days) | < 1.5 | 1.6 – 1.8 | > 1.9 |
| Sonali / cockerel | < 2.2 | 2.3 – 2.8 | > 3.0 |
| Layer (per dozen eggs) | < 1.8 | 1.9 – 2.2 | > 2.4 |
How FCR is calculated
FCR = total feed consumed (kg) ÷ total live weight gained (kg)
Example: 500 broilers eat 1,600 kg of feed and grow from 45 g to 2.1 kg average. Weight gained = 500 × (2.1 − 0.045) = 1,027.5 kg. FCR = 1600 ÷ 1027.5 = 1.56 — a good result.
5 ways to improve a bad FCR
- Stop feed wastage — fill feeders only ⅓ full; spilled feed can silently add 0.2 to FCR.
- Control temperature — cold birds burn feed to stay warm instead of growing.
- Use the right feed phase — starter, grower, finisher at the right ages; don't stretch starter feed.
- Fix water first — birds that drink less eat less. Clean, cool water 24/7.
- Cull sick birds early — they eat without gaining, dragging the flock average down.
More free tools: Egg incubation calculator · Broiler profit calculator