Free pet calculators for dogs, cats and every other pet
Free calculators for age, nutrition, cost and health, across 101 species. No sign-up, no stored data.
- No account needed
- Nothing stored
- Sources on every tool
- ~30s per answer
- Tools
- 2,070
- Categories
- 20
- Pets covered
- 101
- Sign-up required
- 0
Browse by pet
Every species gets its own reference data, not one generic formula.
Most used
Popular tools
Hover a row to pause it.
By topic
Explore by category
Jump straight to the kind of question you are trying to answer.
Dog Nutrition
5 tools
- Dog Food Calculator
- Dog Water Intake Calculator
- Dog Feeding Schedule Planner
+2 more
Cat Health
3 tools
- Cat Body Condition Score Tool
- Cat Dental Care Schedule Planner
- Cat Vaccination Schedule Planner
Rabbit Weight
3 tools
- Rabbit Adult Weight Predictor
- Rabbit Weight Calculator
- Rabbit Ideal Weight Checker
Parrot Behavior
3 tools
- Parrot Breeding Pair Compatibility Checker
- Parrot Noise Level Estimator
- Parrot Talking Ability Quiz
Goldfish Housing
3 tools
- Goldfish Tank Size Calculator
- Goldfish Stocking Level Calculator
- Goldfish Tank Volume Calculator
Horse Age
2 tools
- Horse Age Calculator
- Horse Lifespan Estimator
Dog Safety
5 tools
- Dog Chocolate Toxicity Calculator
- Dog Onion and Garlic Toxicity Calculator
- Dog Poison Symptom Checker
+2 more
Cat Breeding
3 tools
- Cat Pregnancy Calculator
- Cat Heat Cycle Tracker
- Cat Litter Size Estimator
Rabbit Cost
3 tools
- Rabbit Boarding Cost Calculator
- Rabbit Cost Calculator
- Rabbit Monthly Budget Planner
Parrot Grooming
2 tools
- Parrot Beak & Nail Trim Schedule Planner
- Parrot Wing Clipping Guide Tool
Goldfish Water
3 tools
- Goldfish Nitrogen Cycle Tracker
- Goldfish pH Dosing Calculator
- Goldfish Water Change Calculator
Horse Names
1 tool
- Horse Name Generator
Built differently
One formula for every animal is how you get the wrong answer.
Most pet calculators run a single equation and swap the label. Ours carry species data: aging curves, gestation lengths, safe temperature bands and diet profiles, per animal.
- Species-specific reference data behind every result
- Sources listed on the page, not buried
- Dosage tools gated for veterinary review before publishing
- Inputs never leave your browser
- 2070
- Tools live
- 20
- Categories
- 101
- Species covered
- 0
- Data points stored
Featured tools by pet
A quick look at what each species covers.
Dog Age Calculator
Converts dogs' age into human-equivalent years using a species-specific aging curve.
Dog Food Calculator
Calculates daily food portion in grams or cups for dogs based on weight, age and activity level.
Dog Chocolate Toxicity Calculator
Works out how dangerous the chocolate your dog ate is from its weight and the type and amount of chocolate.
Dog Onion and Garlic Toxicity Calculator
Works out how risky the onion or garlic your dog ate is from its weight and the amount eaten.
Dog Poison Symptom Checker
Flags likely poisoning symptoms in dogs and advises urgency of vet care.
Dog Pregnancy Calculator
Estimates due date and gestation countdown for pregnant dogs.
Four steps
How it works
- 1
Search
Find a tool by pet, category or keyword. Press ⌘K from anywhere.
- 2
Enter details
Fill in a few fields about your pet. Nothing is stored.
- 3
Get your answer
A clear result with the reasoning behind it, not just a number.
- 4
Share or save
Copy the result to keep it, or take it to your next vet visit.
Why XpertsPet
Always free
Every tool is free, with no account required.
Sourced methods
Calculations come from published species references.
No data stored
Calculations run in your browser and are never saved.
Vet-aware
Health and dosage tools tell you when to confirm with a vet.
Questions
Frequently asked
Are the XpertsPet tools really free?
Do you store the details I type into a calculator?
How accurate are the results?
Why do different pets give such different answers?
Can I use these tools instead of seeing a vet?
Find the answer for your pet in about thirty seconds.
No account, no paywall, nothing stored. Just pick a tool and go.