Pet care, reimagined with AI.
65+ vet-grade calculators, breed intelligence and instant health insights — powered by a pet-trained model that answers like a specialist. Free, private, no signup.
Welcome reel
See the love behind every calculator
A short, warm clip of pets and families sets the tone for PetHub — care-first, calm, and built for real life with dogs and cats.
Ask. Calculate. Understand.
Every tool is an AI agent specialized in one thing. Give it your pet, get answers in seconds.
~1,180 kcal / day based on RER × 1.6 for a neutered adult Labrador at healthy weight.
A toolkit that thinks with you
Each tool is a focused agent — purpose-built, vet-reviewed, always free.
Dog Age Calculator
Convert your dog's age to human years using the latest science-based formula. Accurate for all breed sizes.
Run agentCat Age Calculator
Find out your cat's age in human years with our science-based calculator.
Run agentDog Food Portion Calculator
Calculate the exact daily food portion your dog needs based on weight, age, and activity level.
Run agentCat Food Portion Calculator
Estimate daily calories and portions for indoor or outdoor cats by weight, age, and activity.
Run agentPet Daily Calorie Estimator
Rough daily kcal needs for dogs or cats using weight and activity—starting point for label math.
Run agentDog Water Intake Calculator
Approximate daily water needs from weight, diet type, and weather notes.
Run agentCat Hydration Planner
Combine wet/dry feeding with a simple water-intake target for indoor cats.
Run agentIdeal Dog Weight Range Guide
Compare your dog's weight to typical healthy bands by size category (toy to giant).
Run agentCat Weight & Body Condition Guide
Quick checks to see if your cat might be over or under ideal condition before the vet visit.
Run agentBuilt for pet parents who want real answers
Modern tools. Modern science. Zero fluff. All free.
Vet-grade science
Every formula is drawn from peer-reviewed veterinary research — no outdated myths.
Instant answers
Type, click, done. Sub-second responses with full reasoning you can trust.
Privacy first
Your pet’s data stays on your device. Nothing leaves unless you say so.
Every species
Dogs, cats, birds, fish, reptiles — one intelligent toolkit for every companion.
What pet parents say about PetHub
Typical feedback we hear from people using our free tools — nutrition math, age converters, and breed research in one place.
-
The dog food calculator finally made kcal and cups click for me. I brought a screenshot to our vet and we adjusted portions in minutes.
-
I use the cat calorie tool every time we switch foods. Less guesswork, and my senior cat is holding steady weight.
-
Breed pages plus the age calculators saved me hours of scattered Googling. Everything feels consistent and calm.
-
I wanted something free that still felt “serious.” The formulas are explained clearly — I actually understand RER now.
Illustrative stories from users; experiences vary. Tools support education and do not replace your veterinarian.
Every agent at a glance
Dog Age Calculator
Convert your dog's age to human years using the latest science-based formula. Accurate for all breed sizes.
Cat Age Calculator
Find out your cat's age in human years with our science-based calculator.
Dog Food Portion Calculator
Calculate the exact daily food portion your dog needs based on weight, age, and activity level.
Cat Food Portion Calculator
Estimate daily calories and portions for indoor or outdoor cats by weight, age, and activity.
Pet Daily Calorie Estimator
Rough daily kcal needs for dogs or cats using weight and activity—starting point for label math.
Dog Water Intake Calculator
Approximate daily water needs from weight, diet type, and weather notes.
Cat Hydration Planner
Combine wet/dry feeding with a simple water-intake target for indoor cats.
Ideal Dog Weight Range Guide
Compare your dog's weight to typical healthy bands by size category (toy to giant).
Cat Weight & Body Condition Guide
Quick checks to see if your cat might be over or under ideal condition before the vet visit.
Pet Medication Schedule Helper
Build a simple interval table from prescription frequency—reminder aid only.
Dog Exercise Time Calculator
Suggested daily active minutes by age, size band, and energy level you select.
Dog Pregnancy Week-by-Week Guide
Typical canine gestation length with week markers for planning vet visits.
Kitten Age & Milestones
Convert kitten age to human-equivalent weeks and highlight socialization windows.
Pet Annual Cost Estimator
Rough yearly budget for food, prevention, insurance optional, and routine care bands.
Dog Crate Size Calculator
Length and height targets from adult weight estimate and lying-down clearance rule.
Dog Harness Fit Checklist
Two-finger rule, shoulder freedom, and no-rub checkpoints before long walks.
Cat Litter Box Size Guide
Minimum box length from nose-to-tail rule and multi-cat N+1 litter rule.
Air Travel Pet Crate Checklist
IATA-style reminders: ventilation, door locks, food/water cups—verify airline PDF.
Dog Dental Care Planner
Home brushing cadence and vet dental timing suggestions by age.
Dog Itch & Scratch Log
Log itch scores over days to share trends with your dermatology vet.
Puppy Vaccine Timeline (General)
Typical DHPP-style spacing by week with reminder to follow local law and vet protocol.
Dog Resting Heart Rate Guide
Normal resting pulse bands by size—how to count at home and when to call the vet.
Dog Heat Cycle Calendar Helper
Mark proestrus/estrus windows for planning walks and vet timing—averages only.
Cat Spay/Neuter Timing Info
Age bands and weight considerations commonly discussed with shelters and vets.
Dog Hiking Calorie Burn Estimator
Rough kcal burn add-on for a hike given distance, pace, and dog weight.
Dog Water Safety Checklist
Life jacket fit, current strength, and post-swim rinse reminders.
Rabbit Housing Size Calculator
Minimum floor area from rabbit weight with hop length rule of thumb.
Hamster Cage Floor Space Calculator
Unbroken floor space in cm² from species selection—Syrian vs dwarf norms.
Aquarium Volume & Light Guide
Tank volume from dimensions plus ultra-light general stocking disclaimer.
Bird Cage Bar Spacing Guide
Safe bar spacing ranges from budgie to macaw with escape and injury notes.
Pet Food Transition Schedule
7–10 day mix percentages to reduce GI upset when changing diets.
Dog Food Calorie Density Compare
Compare kcal per cup vs kcal per kg when labels use different units.
Cat Wet to Dry Calorie Converter
Swap wet cans to dry cups at equal maintenance kcal—rough equivalence.
Dog Body Condition Score Guide
Interactive BCS 1–9 cues with photos described in text for self-check.
Adult Cat Nutrient Baselines
Summary targets for protein and fat as % of calories for healthy adults—textbook style.
Dog Food Dry Matter Protein %
Convert guaranteed analysis to dry matter protein for apples-to-apples can vs kibble.
Pet Microchip Checklist
Register ID, update phone after moves, and scan at annual vet visit.
Dog Muzzle Size by Snout Length
Basket length from nose tip to eye line plus pant room allowance.
Cat Carrier Size by Weight
Length and height from cat length measurement rule—turn-around space.
Senior Dog Mobility Care Guide
Ramps, rugs, and exercise moderation checklist—not supplement dosing.
Puppy Socialization Week Planner
Gentle novelty goals per week from 8–16 weeks with fear-period notes.
Dog Alone-Time Training Log
Gradual departure minutes tracker for separation-related distress plans.
Cat Indoor Playtime Planner
Split play bursts to mimic hunting—total minutes per day by age.
Dog Grooming Frequency by Coat
Brush and bath cadence by coat length and shedding level you pick.
Pet Insurance Comparison Checklist
Deductibles, annual vs per-incident, exclusions, and waiting periods to compare quotes.
Dog Energy Match Quiz
Short lifestyle quiz suggesting energy-compatible size bands—not breed picker.
Multi-Cat Feeding Stations Planner
Food and water station count from cat number with microchip feeder notes.
Winter Paw Protection for Dogs
Booties vs balm, salt rinse, and ice-ball between pads checklist.
Cat Window Safety Checklist
Screens, restrictors, blind cords, and balcony netting reminders.
Pet First Aid Kit Checklist
Bandage materials, tick remover, thermometer, and transport numbers slot.
Dog Agility Jump Height Guide
Beginner jump heights from shoulder height with safety ramp-in advice.
Cat Stress Reduction Options
Environmental vs pheromone vs routine tools—no drug dosing.
Pet Toxicity Emergency Prep Card
Save poison hotline slots by region placeholder and “bring label” reminder.
Give your pet the AI advantage
Save results, track weight, compare breeds and unlock every agent. Free forever.