Use this calculation to compare aquaculture production, feeding, growth, water-quality, or hatchery measurements collected with the same definitions and units.

Feed Consumed Kilograms (kg)

Required number in kg.

Biomass Gain Kilograms (kg)

Required number in kg.

The cited overview of Feed conversion ratio supplies background for the terminology and domain context used by this tool.^[1]

Calculate apparent feed conversion ratio as feed consumed divided by wet biomass gain; natural food can affect interpretation. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Feed Conversion Ratio (kg/kg)

Returned number in kg/kg.

• Species, life stage, temperature, salinity, system design, sampling method, and management practice can materially change aquaculture measurements and suitable operating ranges.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Complement the calculation with calibrated water-quality instruments, representative sampling, feed and mortality records, and species-specific guidance from qualified aquatic-health or production professionals.

• Feed Cost Per Kg Gain

  Estimate feed cost per kilogram of wet biomass gain from FCR and feed price; other production costs are excluded.

• Daily Feed Rate

  Convert a chosen daily feeding percentage of live biomass into feed mass per day.

• Energy Requirement

  Calculate energy supplied by a feed ration; it does not infer a species' metabolic requirement.