Overview
By switching between dog and cat, entering body weight and the food’s metabolizable energy (ME), and selecting (or manually inputting) a life-stage MER factor (RER multiplier), the tool automatically calculates RER, MER, and the recommended daily feeding amount (g)—with the formulas shown. ME can be entered in kcal/100 g or kcal/kg. It covers key use cases such as growth, pregnancy/lactation, and weight management, making it ideal for label development and internal validation.
Daily Feeding Amount Calculator (RER/MER → g/day)
Species
ME unit
Tip: Click a suggested MER factor chip below to auto-fill the MER factor.
Enter the product’s metabolizable energy (ME) from the label and choose whether it is shown as kcal/100g or kcal/kg.
Enter the product’s metabolizable energy (ME) from the label and choose whether it is shown as kcal/100g or kcal/kg.
Suggested MER factors (click to apply)
Lactation typically ranges 3.0–6.0+ (depends on litter size)
RER/MER & feeding amount (g/day)
- g/day
RER: - kcal/day
|
MER: - kcal/day
|
ME: -
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Values are estimates. Adjust ± based on age, activity level, and body condition score (BCS).
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