Adult dogs · Weight & body condition
Dog Weight Calculator
Compare your dog's current weight with a target set by your veterinarian. Use body condition as additional context, rather than guessing an ideal weight from breed alone.
By DogAge · Updated October 13, 2026 · Sources below
Adult dog weight check
For adult dogs. Compare a weigh-in with a target your vet has set, and keep the 9-point body-condition score separate from weight.
Inputs stay in this browser tab. No account needed.
Compare current weight with a vet-set target
Weight is useful when it answers a specific question: how has it changed, and how far is it from an appropriate target? It is less useful when compared with a single “normal” number for all dogs of a breed.
Difference = current weight − target weight
Percentage difference = difference ÷ target weight × 100
For 30 kg now and a 25 kg target: the difference is 5 kg, and 5 ÷ 25 × 100 = 20% above target.
If you leave the target blank, the tool explains body condition without declaring an ideal weight. That is intentional: it cannot examine your dog or know whether a generic target is suitable.
Dog body-condition score on the 9-point scale
| Score | General interpretation |
|---|---|
| 1–3/9 | Below ideal; veterinary assessment is important. |
| 4–5/9 | Ideal band; ribs should be assessable without excessive fat covering. |
| 6–7/9 | Above ideal; discuss an appropriate target. |
| 8–9/9 | Well above ideal; a supervised plan is needed. |
Body-condition scoring includes looking and feeling, not just reading the scale. A thick coat can hide the waist; muscle loss can coexist with excess fat. Refer to the full WSAVA chart and ask your vet to demonstrate the assessment.
When a weight change needs a veterinary check
Unexplained weight loss or gain, poor appetite, increased thirst, vomiting, diarrhea or reduced energy needs an assessment. The calculator cannot distinguish a diet-related change from illness.
This adult tool is not designed to set weight goals for puppies, pregnant dogs or nursing dogs. Track a puppy's measured growth on the dedicated growth page; discuss nutritional needs for pregnancy or lactation with your veterinary team.
Dog Weight Calculator FAQ
What is my dog's ideal weight?
An ideal weight is individual. Your veterinarian assesses body fat, muscle, frame, health and life stage. A breed-average weight or a self-assessed score cannot establish a personalized target.
How is the percentage above target calculated?
The calculator subtracts the target from current weight, divides the difference by the target, and multiplies by 100. A dog weighing 30 kg against an entered 25 kg target is 20% above that target.
Does a 20% difference mean my dog is obese?
Only if the target genuinely represents the dog's ideal weight and a clinical assessment supports that interpretation. VCA describes obesity as more than 20% above ideal weight, but this calculator does not verify your target or diagnose obesity.
Can I use a 5-point body-condition score?
No. This interface uses the WSAVA 9-point scale. Do not enter a score from a 5-point scale as though it were interchangeable; ask your veterinarian which scale was used.
Can the calculator tell me how much food to give?
No. It does not calculate calories, portions or a weight-loss rate. Pregnancy, growth, illness and other factors can change nutritional needs, so feeding changes require individualized advice.
Sources & model notes
- WSAVA: 9-point dog body-condition chart
Score descriptions and the ideal band of 4–5/9. This page does not convert self-assessed BCS into a target weight.
- VCA: Obesity in dogs
Explains overweight and obesity relative to ideal body weight, and why hands-on assessment matters.
- VCA: Creating a weight reduction plan for dogs
Veterinary supervision and follow-up, rather than an automatic diet prescription.