Dog Health Calculators
Is my dog a healthy weight, and how old is it really? Convert dog years to human years with size-adjusted tables, score body condition, find an ideal weight and plan safe weight loss, predict a puppy’s adult size, and check whether your dog counts as a senior yet.
Main tools
- Dog Age Calculator: Dog Years to Human Years
Convert your dog’s age into human years using size-adjusted veterinary life-stage data instead of the inaccurate multiply-by-seven rule.
- Dog Ideal Weight Calculator
Estimate your dog’s ideal weight from its current weight and body condition score, and see how many kilograms or pounds it needs to lose or gain.
- Dog Body Condition Score Calculator
Score your dog on the 9-point body condition scale from rib, waist and abdominal tuck checks you can do at home.
- Dog Weight Loss Calculator: Calories and Timeline
Dog weight loss calculator: enter current and target weight to get a safe daily calorie target, a weekly loss rate and a realistic date to reach the goal.
More tools
- Puppy Weight Calculator: Predict Adult Size
Predict how big your puppy will grow from its current age and weight, adjusted for expected breed size group.
- Puppy Growth Chart: Is Your Puppy on Track?
Puppy growth chart calculator: compare your puppy’s weight at its age with the expected curve for small, medium, large and giant breeds, and see if it is on track.
- Senior Dog Age Calculator
Senior dog age calculator: find out whether your dog counts as senior yet, since the threshold shifts by several years between small and giant breeds.
Guides and explainers
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How big will my puppy get? Adult weight by age
How big will my puppy get? Divide current weight by the fraction of adult weight typical for its age and size: a medium puppy at 4 months is about 53% grown.
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Dog years to human years: why the 7× rule is wrong
A one-year-old dog is about 15 in human terms, not 7, and a Great Dane ages faster than a Chihuahua. The size-adjusted table and the epigenetic formula.
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When is a dog considered a senior? It depends on size
When a dog is considered senior: giant breeds from about 7, large from 8, medium from 10, small from 11. What changes: twice-yearly exams and bloodwork.