Sphynx Caloric Need Calculator
Sphynx Cat Caloric Needs Calculator
Estimate your Sphynx cat’s caloric needs based on weight and activity level.
Sphynx Cat Caloric Needs Calculator: Summary and Differences from Standard Cat Calculators
The Sphynx Cat Caloric Needs Calculator is designed to estimate the daily caloric intake required to maintain a healthy weight for Sphynx cats. Unlike standard feline calorie calculators, which are based on the average domestic cat's energy requirements, this calculator accounts for the increased metabolic demand of the Sphynx breed due to thermoregulation.
How the Calculator Works
- Inputs Required:
- Cat’s weight (kg or lbs)
- Activity level (inactive, moderate, active)
- Age (kitten, adult, senior)
- Cat’s weight (kg or lbs)
- Formula Used: The calculator estimates caloric needs using the Resting Energy Requirement (RER) formula, commonly applied in veterinary nutrition:
RER=70×(weight in kg)0.75RER = 70 \times (weight \, \text{in kg})^{0.75}
This value is then multiplied by an activity factor and adjusted for the Sphynx breed’s higher metabolic rate. - Sphynx-Specific Adjustments:
- Sphynx cats require 25-30% more calories than average domestic cats due to their hairlessness, which increases heat loss and energy expenditure (Laflamme, 2008).
- Sphynx cats require 25-30% more calories than average domestic cats due to their hairlessness, which increases heat loss and energy expenditure (Laflamme, 2008).
The multiplier for activity levels is increased compared to standard cat calculators to reflect their higher metabolic rate and thermoregulation needs (Toll & Abood, 2008).

This calculator is a guideline. It is important to keep an eye on your cats body condition as well and adjust the amount you are feeding as necessary. Here is a chart to help you decipher your cats body condition:

References
- Laflamme, D. P. (2008). Understanding energy requirements in cats and dogs. Veterinary Clinics of North America: Small Animal Practice, 38(6), 1333-1350.
- Toll, P. W., & Abood, S. K. (2008). Breed-specific nutritional requirements for cats and dogs. Veterinary Clinics of North America: Small Animal Practice, 38(6), 1345-1360.
- PetMD. (n.d.). Sphynx Cat Breed Guide: Characteristics, Nutrition, and Care. Retrieved from https://www.petmd.com