Calculate poultry feed conversion ratio (FCR) by dividing total feed consumed by live weight produced. Track broiler, turkey, and layer feed efficiency.
The Poultry Feed Conversion Calculator determines the feed conversion ratio (FCR) — the pounds of feed consumed per pound of live body weight produced. FCR is the most critical efficiency metric in commercial poultry production, directly determining feed cost per pound of meat and overall flock profitability.
Modern broiler genetics have achieved remarkable feed efficiency. Well-managed broiler flocks can achieve FCR below 1.7:1, meaning less than 1.7 pounds of feed produces one pound of live chicken. This represents a dramatic improvement from 3.0+ FCR decades ago, driven by genetic selection, nutrition research, and improved management.
FCR varies by species, age, genetics, nutrition, health, and environment. Broilers are the most feed-efficient meat animal, followed by turkeys, then pigs, then cattle. Tracking FCR by flock helps identify deviations from expected performance that may indicate management or health issues. Whether you are a beginner or experienced professional, this free online tool provides instant, reliable results without manual computation.
Feed represents 65-70% of total broiler production cost. A 0.01 improvement in FCR across a million-bird complex saves thousands of dollars. Tracking FCR reveals the economic impact of nutrition, health, and management decisions. Having a precise figure at your fingertips empowers better planning and more confident decisions. Manual calculations are error-prone and time-consuming; this tool delivers verified results in seconds so you can focus on strategy.
FCR = Total feed consumed (lbs) / Total live weight produced (lbs) Or per bird: FCR = Feed per bird (lbs) / Market weight per bird (lbs) Benchmark targets: - Broilers (42 days): 1.6–1.8 - Turkeys (toms, 20 weeks): 2.3–2.6 - Turkeys (hens, 16 weeks): 2.0–2.3
Result: FCR = 1.37
Total live weight = 20,000 birds × 6.2 lbs = 124,000 lbs. FCR = 170,000 / 124,000 = 1.37. This is excellent performance for 42-day broilers. Feed per bird = 170,000 / 20,000 = 8.5 lbs.
Genetic selection has been the primary driver of FCR improvement in poultry. Modern broiler breeds convert feed to meat about twice as efficiently as breeds from the 1960s. Continued genetic progress means that FCR benchmarks need regular updating.
House temperature, ventilation, and litter quality all affect FCR. Birds in thermal stress (hot or cold) divert energy from growth to temperature regulation. Maintaining the thermoneutral zone throughout grow-out minimizes this energy waste and optimizes FCR.
Track FCR flock-over-flock to identify trends. Seasonal patterns (summer heat worsens FCR), feed source changes, vaccination program adjustments, and house equipment upgrades should all show measurable impacts on FCR when tracked consistently.
Modern broiler genetics in well-managed houses achieve 1.55-1.70 FCR at 42-day market age. FCR above 1.80 at this age suggests inefficiency from health issues, poor feed quality, environmental stress, or management problems.
Birds that die consumed feed but produced no marketable weight. A 5% mortality rate can worsen flock FCR by 0.05-0.10 points. Calculate FCR including all feed delivered, not just feed consumed by survivors.
Yes. FCR increases (worsens) as birds age because maintenance energy requirements grow larger relative to growth. Broilers at 35 days may have 1.50 FCR while at 49 days, FCR may be 1.85. This drives market age decisions.
Pellets improve FCR by 5-7% versus mash because birds spend less energy eating and waste less feed. Crumbles (broken pellets) are intermediate. High-quality pellets with minimal fines deliver the best FCR improvement.
Some integrators calculate adjusted FCR by standardizing to a reference body weight. This allows fair comparison between flocks marketed at different ages or weights. The adjustment accounts for the fact that FCR naturally increases with bird weight.
Lower FCR means better feed efficiency, but it must be evaluated alongside growth rate and livability. A flock with excellent FCR but poor growth rate may not be economically optimal. The goal is to optimize the combination of FCR, growth, and livability.