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Nutrition RER/MER Calculator
Resting & maintenance energy requirements
Feeding Plan
Resting Energy (RER)
--
kcal/day
Base metabolic requirement
Maintenance Energy (MER)
--
kcal/day
Adjusted for life stage
Applied Factor
-- x RER
Plan Type
Maintenance (neutered)
Calculation Formulas
RER = 70 × (Weight kg)0.75
MER = RER × Life Stage Factor
Cups/day = MER ÷ kcal per cup
MER = RER × Life Stage Factor
Cups/day = MER ÷ kcal per cup
🥣 Feeding Amount
--
cups/day
Enter food energy density to calculate
💡 Clinical Pearls
- Use ideal body weight for overweight patients
- Adjust based on body condition score trends every 2-4 weeks
- Consider concurrent disease when selecting factors
- Cup sizes vary by brand; verify with actual measuring cup