Dog calculators
Free calculators for dog owners, built from published veterinary research and open data. Work out a puppy’s adult weight, your dog’s age in human years, how much to feed, a due date, or a heat cycle. Every number has a source.
Which tool do I need?
| If you want to… | Use |
|---|---|
| Predict how big a puppy will get | Puppy weight calculator |
| Find a due date and timeline | Dog pregnancy calculator |
| Know your dog’s age in human years | Dog years calculator |
| Work out daily food and cups | Dog food calculator |
| Feed a raw diet by calories | Raw dog food calculator |
| Predict the next heat | Dog heat cycle calculator |
Questions
Are these dog calculators free?
Yes, every tool on PawScales is free, with no login. Each one shows its formula and the sources behind it, and runs entirely in your browser, so nothing you enter is sent anywhere.
Where do the numbers come from?
From published veterinary research, open datasets and official sources like Cornell, Merck, the Pet Nutrition Alliance and the AKC. Every page lists its sources with links and the date we checked them.
Is this veterinary advice?
No. These are estimates for general information, built from reputable sources and tested against known examples. For anything about your dog’s health, diet, breeding or weight, ask your vet, who knows your dog.