Dog Health & Age Calculator

Every dog question has an answer here. Calculators for Dogs gives you 139 free calculators for your dog's health, nutrition, age, and life stage. No account, no sign-up, no ads, no paywall. Every tool works fully offline, so you get an answer even with no signal at the vet or the park. Your saved results stay on your phone.

This app is not a medical device and does not diagnose, treat, cure, or prevent any condition. It is an educational tool to help you understand your dog and ask better questions. Always consult your veterinarian, and in an emergency call your vet or an animal poison hotline.

The calculators are the same ones on calculatorsfordogs.com, built on vet-reviewed formulas and rebuilt for your phone.

HOW OLD IS MY DOG? (age and life stage)
- Dog age calculator (dog years to human years)
- Life expectancy calculator, plus life expectancy by weight
- Puppy development and puppy weight predictor
- Senior care timeline and quality-of-life tools

HOW MUCH SHOULD MY DOG EAT? (food and calories)
- Daily calorie needs calculator
- Weight management and healthy-weight planner
- Body condition score
- Portion, protein, and nutrition calculators for every life stage

IS IT SAFE FOR MY DOG? (toxic-food risk checks)
Check the risk by your dog's weight in seconds:
- Chocolate toxicity calculator
- Xylitol risk calculator
- Grape and raisin risk calculator
- Onion, garlic, caffeine, and macadamia nut checks
These are guides, not a substitute for your vet. When in doubt, call your vet.

IS MY DOG IN HEAT? (heat, breeding, and puppies)
- Heat cycle calculator, with optional cycle tracking
- Ovulation and breeding-timing calculators
- Pregnancy due-date calculator
- Litter size estimator

WHAT WILL MY DOG COST? (cost and budget)
- Lifetime cost calculator
- Monthly budget and one-off cost planners

WHY DOG OWNERS USE THIS APP
- Free forever. All 139 calculators, no paywall and no ads.
- No account needed. Open the app and start. There is no sign-up, and nothing to create.
- Works offline. Everything runs on your phone.
- Search built in. Type "chocolate", "age", or "calories" and jump straight to the tool you need.
- Save and get reminders. Keep results for each dog and set reminders for the next weight check, heat cycle, or vet visit.

From a puppy's first weeks to a senior dog's later years, Calculators for Dogs is the one free, offline app for every number that matters to your dog.