Care decisions, actually answered.
67 free calculators for feeding, age, walks, costs, and breed compatibility — with the math vets actually use.
Most popular pet calculators
What thousands of owners are using right now.
NUTRITIONDog Food Calculator
Daily portions in cups and grams, based on RER/DER vet formulas.
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NUTRITIONCat Weight Loss Calculator
Calorie and portion targets for feline weight management.
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HEALTHPet Age Calculator
Convert pet age to human years, adjusted for breed size.
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HEALTHDog Pregnancy Calculator
Due dates and week-by-week gestation from mating date.
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LIFESTYLEDog Walking Calculator
Recommended daily distance by breed, age, and weather.
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BREEDSBreed Selector
Find breeds that fit your home, schedule, and family.
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FUNPet Name Generator
Hundreds of names filtered by style and species.
Open calculatorAll pet care tools
Comprehensive calculators and tools organized by category.
Nutrition & feeding
Dog food, raw diets, cat calories, portions, protein — the math vets use.
Dog Food Calculator
Daily portions in cups and grams, based on RER/DER vet formulas.
Cat Weight Loss Calculator
Calorie and portion targets for feline weight management.
Raw Diet Planner
BARF meal plans — muscle, organ, and bone ratios by weight.
Food Safety Checker
Check any ingredient against known pet toxicity data.
Dog Weight Calculator
dog weight calculator: Find your dog's healthy weight range and body condition score — breed-adjusted, not a single generic number.
Dog Calorie Calculator
dog calorie calculator: Calculate your dog's daily calorie needs using the RER/DER formula vets use — adjusted for age, activity, and spay/neuter status.
Cat Feeding Chart (wet/dry)
how much to feed a cat chart: A feeding chart broken out by weight, age, and food type (wet vs dry) — because the two aren't measured the same way.
Cat Food Calculator (portions)
cat food calculator: Get an exact daily portion in grams or cups based on your cat's weight, life stage, and the calorie density of your specific food.
Dog Protein Calculator
dog protein calculator: Estimate your dog's daily protein target in grams, adjusted for growth, activity, and life stage.
Dog RER / Kcal Calculator (vet-advanced mode)
dog rer calculator: Calculate Resting Energy Requirement using the exact WSAVA-referenced formula: 70 × (weight in kg)^0.75.
Dog Food Calculator by Weight & Age (filtered view)
dog food calculator by weight and age: Enter your dog's exact weight and age for a portion recommendation that adjusts automatically as your dog grows or ages…
Cat Weight Loss Calculator (standalone)
cat weight loss calculator: Calculate a safe weight-loss calorie target for your cat — rapid weight loss carries real health risks that this tool is built to…
Dog Feeding Calculator — Weight Loss Mode
dog weight loss calculator: A weight-loss-specific portion calculator using a conservative calorie deficit — because crash dieting a dog carries its own risks.
Health & wellness
Age, vet costs, insurance, vaccinations, dosages, and body condition.
Pet Age Calculator
Convert pet age to human years, adjusted for breed size.
Vet Cost Estimator
Annual vet cost estimates by region and pet type.
Pet Insurance Calculator
Compare plan costs against your pet's expected care.
Vaccination Schedule
Personalized vaccination timelines from puppy to senior.
Weight Tracker
Track body condition score over time.
Dog Pregnancy Calculator
Due dates and week-by-week gestation from mating date.
Dog Age Calculator
Skip the "multiply by 7" myth. Our dog age calculator uses the size-adjusted formula vets actually reference, based on breed weight class.
Cat Age Calculator
cat age calculator: Find out your cat's real human-equivalent age with the vet-referenced formula — not the outdated "multiply by 7" rule.
Chocolate Toxicity Calculator (dog)
dog chocolate calculator: Different chocolate types have very different toxicity levels. Enter your dog's weight and the chocolate eaten to check the risk…
Benadryl Dosage Calculator for Dogs
benadryl for dogs dosage: See how the standard 1mg-per-pound dosing guideline works, and when Benadryl isn't the right choice for your dog's symptoms.
Dog Quality of Life Calculator
dog quality of life calculator: A scored assessment based on the HHHHHMM scale vets use with hospice and senior-care families, to help bring clarity to a hard…
Meloxicam Dosage Calculator for Dogs
meloxicam dog dosage calculator: See how vets calculate meloxicam dosing by weight and why exact dosing must always come from your prescribing veterinarian.
Trazodone Dosage for Dogs
trazodone dosage for dogs: Trazodone dosing for dogs varies by use case (situational anxiety vs. post-surgical calm) — see how vets typically approach the…
Dog BMI Calculator
dog bmi calculator: Dogs don't have an official BMI formula — here's the body condition scoring approach vets use instead, with a weight-based estimate.
Cat BMI Calculator
cat bmi calculator: Cats don't have a true BMI formula like humans — here's the body condition method vets actually use, plus a weight-range estimate.
Prednisone Dosage for Dogs
prednisone dosage for dogs: Prednisone dosing for dogs differs significantly by condition (anti-inflammatory vs. immunosuppressive) — see how the math and…
Dog Growth Calculator (puppy growth curve)
dog growth calculator: Plot your puppy's weight against expected breed-size growth curves to spot whether growth is tracking normally.
Cat Pregnancy Due Date Calculator
cat pregnancy calculator: Estimate your cat's kittening date and track gestation week by week — cat pregnancies run shorter than dogs' at roughly 63-65 days.
Dog Heat Cycle Calculator
dog heat cycle calculator: Estimate your dog's heat cycle stages and fertile window based on cycle history — most female dogs cycle roughly every 6 months.
Cat Chocolate Toxicity Calculator
cat chocolate toxicity calculator: Cats are actually more sensitive to theobromine than dogs pound-for-pound, but chocolate ingestion is rarer since cats…
Is My Dog Overweight? Calculator
is my dog overweight: A fast, vet-referenced way to check — feel for ribs, look for a waist, check the abdominal tuck. Get your dog's body condition score in…
Diazepam Dosage Chart for Dogs
dog diazepam dosage chart kg: Diazepam is a controlled, prescription-only medication for dogs — see the general weight-based reference and why exact dosing…
Gabapentin Dosage for Dogs
gabapentin dosage for dogs: Gabapentin is commonly used for pain, anxiety, and pre-vet-visit sedation in dogs — see how the weight-based math typically works.
Dog Medication Dosage Hub (multi-drug selector)
dog medication dosage chart: A navigation hub linking weight-based dosage references for the most commonly asked-about dog medications — always vet-confirmed…
Dog Tylenol/Acetaminophen Warning Calculator
dog tylenol dosage chart in ml: Acetaminophen (Tylenol) is not considered safe for routine use in dogs and is outright toxic to cats — here's why, and what to…
Vaccination Cost Calculator
how much do dog vaccines cost: Estimate first-year and annual vaccination costs, broken down by core (required) versus non-core (lifestyle-dependent) vaccines.
Dog Sunburn / Heat Index Safety Calculator
unvalidated — recommend keyword research before build: Check whether it's too hot to walk your dog based on air temperature, humidity, and pavement surface —…
Lifestyle & care
Walking, litter, travel, grooming, puppy growth, and household costs.
Dog Walking Calculator
Recommended daily distance by breed, age, and weather.
Litter Box Calculator
Optimal cleaning schedule for single and multi-cat homes.
Pet Travel Estimator
Costs and logistics for flying or driving with a pet.
Adoption Cost Calculator
First-year budget estimate — supplies, vet, food, extras.
Puppy Weight Calculator
puppy weight calculator: Estimate your puppy's adult weight using growth-rate math, not guesswork — works for purebred and mixed-breed puppies.
Dog Size Calculator (How Big Will My Dog Get)
dog size calculator: See where your dog falls on the toy-to-giant size scale, with adult weight ranges for each category. Also covers puppy size calculator (2.
Pet Sitter Rate Calculator
pet sitter rates calculator overnight: Get a fair-rate estimate for overnight pet sitting based on number of pets, visit length, and location cost-of-living.
Mixed-Breed Puppy Weight Calculator
puppy weight calculator mixed breed: No purebred standard to reference? Estimate adult weight from current weight, age, and paw size instead.
Dog Exercise Calculator
how much exercise does a dog need: Get a daily exercise time recommendation based on breed energy level, age, and health status — not a one-size-fits-all "30…
Pet Transport / Shipping Cost Calculator
fedex pet shipping cost: Compare estimated costs for airline cargo, in-cabin flying, and professional ground transport services for your pet.
Dog Training Cost Calculator
how much does dog training cost: Compare estimated costs across group classes, private in-home training, and board-and-train programs. Also covers KD 22).
Cat Cost Calculator (lifetime & monthly)
cost of owning a cat: Estimate the real lifetime cost of cat ownership — food, litter, vet care, and the occasional emergency — broken down by year.
Dog Grooming Cost & Frequency Calculator
dog grooming cost: Estimate what professional grooming should cost for your dog's coat type and size, plus how often you actually need it. Also covers KD 2).
Litter Cost Calculator
cat litter cost: Compare monthly litter costs across clumping clay, crystal, and natural litter types, adjusted for number of cats. Also covers KD 1).
Multi-Pet Household Cost Calculator
unvalidated — genuine concept extension combining existing tools: Combine food, vet care, litter, and grooming estimates across all your pets for one total…
Breed information
Lifespan, selectors, compatibility, and breed-specific guides.
Breed Lifespan Calculator
Breed-specific lifespan ranges with health factors.
Breed Selector
Find breeds that fit your home, schedule, and family.
Compatibility Checker
Check how different breeds get on with kids and other pets.
Dog Breed Identifier Quiz
dog breed identifier: A trait-based identifier quiz for mixed-breed dogs — size, coat, ear shape, and behavior patterns, cross-referenced against 100+ breed…
Mixed-Breed Life Expectancy Calculator
mixed breed dog life expectancy calculator: Mixed-breed dogs often outlive purebreds of similar size — here's what actually predicts lifespan when there's no…
Dog Breed Percentage / Ancestry Estimator
dog breed percentage calculator: Get a rough breed-mix estimate from physical traits, or see what a DNA test (typically $70-150) adds in precision.
Fun & social
Names, birthdays, horoscopes, memories, and novelty tools.
Pet Name Generator
Hundreds of names filtered by style and species.
Birthday Calculator
Exact age in months, weeks, and human-year equivalent.
Pet Horoscope
Personality notes based on birth date and breed.
Pet Memories
Log milestones, earn badges, and build a timeline.
Cat Genetics / Coat Color Calculator
cat genetics calculator: See the likely coat color and pattern outcomes from a breeding pair, based on feline coat color genetics.
Dog Worth / Value Estimator
how much is my dog worth calculator: A fun estimate based on breed, pedigree status, age, and training — for curiosity, not appraisal or insurance purposes.
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Insights
Vet-written guides, owner deep-dives, and the science behind every calculator.
Where Calculator Estimates Undershoot Reality
I logged every dog expense for a year. Here is where the math is off.
Frenchies and Exercise: The Brachycephalic Balance
How much walking is too much — and the signs to watch for.
Raw Diets: What the Evidence Says
Three peer-reviewed reviews, no marketing, no zealotry.
Built differently from the start
Free to use, vet-reviewed, and privacy-focused.
Veterinarian approved
Every formula is reviewed by our 12-vet board, with names, credentials, and disclosures.
Privacy-first
Calculations run in your browser. Your pet's data never leaves your device — unless you sign in to save.
Location-specific
Costs and recommendations adjusted for your US state or EU country. No generic averages.
Breed-specific
Personalized results based on 100+ dog breeds and 50+ cat breeds, calibrated to each.