What this calculator does
Feed conversion ratio (FCR) works out efficiency of converting feed into body weight gain for livestock or aquaculture. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaFCR = total feed consumed / (final weight − initial weight)
The inputs explained
| Field | What to enter |
|---|---|
| Total feed consumed (kg) | A number, measured in kg. Starts at 1800. |
| Initial weight (kg) | A number, measured in kg. Starts at 200. |
| Final weight (kg) | A number, measured in kg. Starts at 1000. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with total feed consumed
Every other input is held at the calculator’s starting values while total feed consumed varies. Select any row to load that scenario into the calculator.