This dog ideal weight calculator estimates a healthy target weight for your dog. It needs two things you can check at home: the current weight and the body condition score. You get the amount to lose or gain, a safe weekly pace, the time it should take and a check against the AKC breed standard.
1Your dog today
2Pick the body shape that matches
Look at your dog from above and from the side, then run your hands along the ribs. Choose the closest score on the 9-point body condition scale. Not sure? See the full chart.
Estimated ideal weight
Enter a weight
Add your dog's weight and pick a body condition score.
Waiting for details
Vets judge body fat with a body condition score. It works for any breed or mix. The WSAVA body condition score chart uses a 9-point scale, where 4 and 5 are ideal. You only need three checks:
Long or thick coats hide a lot. On fluffy breeds, trust your hands over your eyes. Score again every few weeks.
The descriptions follow the WSAVA chart. The last column is the excess weight that the 2021 AAHA Nutrition and Weight Management Guidelines link to each score.
| Score | Category | Ribs | Waist and belly | Over ideal weight |
|---|---|---|---|---|
| 1 | Under ideal | Visible from a distance, no body fat | Every bony point shows, obvious muscle loss | Not on the AAHA scale |
| 2 | Under ideal | Easily visible, no fat you can feel | Very pronounced, some muscle loss | Not on the AAHA scale |
| 3 | Under ideal | Easy to feel, may be visible | Obvious waist and tuck, spine tops visible | Not on the AAHA scale |
| 4 | Ideal | Easy to feel, thin fat cover | Waist easy to see, tuck clear | Ideal |
| 5 | Ideal | Easy to feel, no excess fat | Waist behind the ribs, belly tucked up | Ideal |
| 6 | Over ideal | Felt under slight excess fat | Waist visible but not prominent | About 10% |
| 7 | Over ideal | Hard to feel under heavy fat | Waist absent or barely visible | About 20% |
| 8 | Over ideal | Only with firm pressure, or not at all | No waist, no tuck | About 30% |
| 9 | Over ideal | Buried under massive fat | No waist, swollen belly, fat on neck and legs | 40% or more |
The AAHA guidelines link each score above 5 to roughly 10% extra body weight. That is about 10% at a score of 6, 20% at 7, 30% at 8 and 40% or more at 9. The calculator divides the current weight by that amount.
Ideal weight = current weight ÷ (1 + 0.10 × (score − 5))
It also shows a likely range from a second AAHA method based on body fat: ideal weight = current weight × (100 − body fat %) ÷ 0.8. Both methods assume an ideal dog carries about 20% body fat.
The AAHA weight management guidelines recommend a loss of 1% to 2% of body weight per week for dogs, with a check every two weeks until that pace is steady. Slower is fine. Faster loss tends to cost muscle and is harder to keep off.
Breed standards list the weight a show dog of that breed should have. They make a useful sanity check, but they are not health targets. In a 2018 study of 140 purebred dogs, Smith and colleagues found that published breed weight ranges did not predict which dogs had an ideal body condition score. A tall, lean Labrador Retriever can sit above the standard at a perfect score. A small-framed one can be overweight inside it.
Pick a breed in the calculator to see where your estimate falls, and browse all dog breeds for the standard weights, heights and life spans. For a growing puppy, the dog size calculator estimates adult size instead.
Score your dog's body condition on the 9-point scale, then work back from its current weight. A dog that scores 4 or 5 is already at an ideal weight. Each point above 5 is roughly 10% extra weight, so a 66 lb dog that scores 7 has an ideal weight of about 55 lb. Ask your vet to confirm the score, because it takes practice to judge.
A score of 4 or 5 out of 9. At that point you can feel the ribs easily under a thin layer of fat, you can see a waist behind the ribs from above, and the belly tucks up when you look from the side.
Aim for 1% to 2% of body weight per week, the rate in the AAHA weight management guidelines. For a 60 lb dog that is about 0.6 to 1.2 lb a week. Faster loss is harder to keep up and can cost muscle, so weigh your dog every two weeks and adjust.
Not always. Breed standards describe show dogs, and a 2018 study of 140 purebred dogs found that the recommended breed weight ranges were not a good predictor of an ideal body condition score. Use the breed range as a rough check and let body condition decide.
Not for a target weight, because puppies are still growing. You can still use the body condition score to check that a puppy is not getting too lean or too round. To estimate how big a puppy will get, use the dog size calculator instead.
See your vet before changing the food. Unexplained weight loss can be the first sign of illness, dental pain or parasites. The calculator gives only a rough minimum target for scores of 1 to 3, because there is no published rule as precise as the one for overweight dogs.
This calculator gives an estimate for healthy adult dogs and is not a substitute for a veterinary exam. Body condition scoring takes practice, and illness, pregnancy, muscle loss and some medicines change what a healthy weight looks like. Talk to your vet before starting a weight loss or weight gain plan.
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