Pet Obesity Calculator
Calculate a dog or cat's obesity rate (%) from current and ideal weight, and see whether they are underweight, ideal, or obese along with a Body Condition Score (BCS) guide.
Last updated:
Input
Obesity rate estimates how much your pet's current weight exceeds its ideal weight. Body size varies even within the same breed, so please treat the result as a rough guide.
Animal
Dog
kg
kg
Result
Dog obesity rate
+20.0%
Result: Obese (BCS 7-8 / 9)
Result
Obese
Difference from ideal
+1.0 kg (over)
Ideal weight
5.0 kg
Obesity categories and Body Condition Score (BCS) guide
| Result | Obesity rate | BCS guide |
|---|---|---|
| Underweight | Under -10.0% | BCS 1-3 / 9 |
| Ideal | -10.0% to under 10.0% | BCS 4-5 / 9 |
| Slightly overweight | 10.0% to under 20.0% | BCS 6 / 9 |
| Obese (your pet) | 20.0% to under 30.0% | BCS 7-8 / 9 |
| Severely obese | 30.0% or more | BCS 8-9 / 9 |
How it works
- The obesity rate (%) is calculated as (current weight - ideal weight) / ideal weight x 100. A positive value means the pet is heavier than ideal, while a negative value means lighter.
- As a rough guide, roughly within plus or minus 10% is shown as Ideal, +10% to +20% as Slightly overweight, and +20% or more as Obese. A 9-point Body Condition Score (BCS) guide is shown alongside.
- Ideal weight depends on breed, age, and frame. If you are unsure of the correct ideal weight, have it measured at your veterinary clinic and ask for advice.
- Results from this tool are only a guide for managing body condition. Actual obesity assessment is best done comprehensively with a BCS evaluation that includes palpation of the ribs and waist as well as visual appearance.
- If you are concerned about sudden weight changes or obesity, always consult a veterinarian before starting a diet or feeding restriction. Extra care is needed for pets with existing health conditions.
- Enter half-width numbers. The result is calculated automatically once both the current and ideal weight are greater than 0.
Reviews
Tell us what you think of this calculator.
Write a review
Found an incorrect result or a problem? Turn this on to report it.
Rating