📦 Feed Conversion Ratio Calculator
Determine FCR to compare animal performance, evaluate diets, and optimize production economics.
Use consistent units (e.g., pounds, kilograms).
Match the unit used for feed intake (e.g., pounds).
How to Use This Calculator
Record feed intake
Sum total feed provided to the group or individual during the test period.
Measure weight gain
Subtract starting weight from ending weight over the same period.
Compare performance
Lower FCR indicates better efficiency. Track against historical or industry benchmarks.
Formula
FCR = Total Feed Intake ÷ Total Weight Gain
Feed Efficiency = Total Weight Gain ÷ Total Feed Intake
Use dry matter values when comparing rations with different moisture contents to avoid skewed FCRs.
Full Description
Feed conversion ratio is a key productivity metric across beef feedlots, poultry houses, aquaculture tanks, and swine barns. Monitoring FCR helps identify ration effectiveness, health issues, or management changes needed to improve margins.
Combine FCR with average daily gain (ADG), cost of gain, and mortality data for a comprehensive performance dashboard.
Frequently Asked Questions
What is a good FCR?
Targets vary by species: broilers ~1.6, feedlot cattle 5–7, tilapia 1.5–1.8. Compare to your own baseline.
Should I use group or individual data?
Group FCRs are common in commercial settings; individual measurements are useful for research.
How does moisture affect FCR?
Wet feeds dilute dry matter intake—convert to dry matter to compare accurately.
Can FCR identify health problems?
Yes. Rising FCR may indicate disease, heat stress, or ration palatability issues.