Pet Care
75 free pet care calculators — including Dog Age in Human Years and Dog Food Amount Calculator. Instant results in your browser, with the formula shown.
Search Pet Care calculators
Dog Age in Human Years by Size
Convert your dog's age to human years.
Pet Food Portion Calculator (RER/MER)
Science-based daily portions (RER/MER) for your dog or cat — exact grams and cups
Dog Food Amount Calculator per Meal
Calculate daily food amount for your dog.
Pet Treat Budget Calculator
Daily treat calorie budget for your dog or cat — the 10% rule with per-treat maximums in units and grams
Pet Food Transition Planner
A 7- or 10-day pet food switch plan — daily grams of each food at the same calories
Pet Weight-Loss Tracker
Weekly target weights down to the healthy-range goal — safe pace and a weigh-in logger for dogs and cats
Aquarium Size Calculator: How Many Fish Fit?
Calculate proper aquarium size for fish.
Pet Medicine Calculator: Tablets to mL
Calculate medication dose by pet weight.
Pet Vaccination Schedule: Dogs & Cats
Recommended vaccination schedule.
Dog Walking Calories: What Your Dog Burns
Calculate calories burned walking the dog.
Pet Life Expectancy Chart by Species
Estimate pet life expectancy.
Dog Vaccination Schedule: AAHA Dates 2026
Calculate vaccination schedule for your dog.
Aquarium Stocking Calculator
Calculate appropriate fish count for aquarium.
Cat Lifespan Calculator: Indoor vs Outdoor
Estimate your cat expected lifespan.
Pet Food Cost Calculator
Calculate pet food cost.
Pet Medication Dose Calculator
Calculate medication dose for your pet.
Pet Vaccine Schedule Calculator
Calculate pet vaccination schedule.
Pet Vaccination Schedule Calculator
Calculate vaccination schedule for your pet.
Puppy Growth Calculator: Adult Weight
Estimate puppy adult weight.
Pet Adoption First-Year Cost Calculator
Calculate first-year pet adoption cost.
Dog Treat Calculator: 10% Daily Rule
Calculate the right amount of treats for your dog.
Dog BMI & Ideal Weight Range Calculator
Check your dog ideal weight.
Dog Exercise Needs: Weekly Minutes & kcal
Calculate calories burned walking your dog.
Pet Insurance Cost Calculator
Estimate pet insurance cost.
Horse Weight Calculator
Estimate horse weight from measurements.
Pet Travel Cost Calculator
Calculate pet travel cost.
Pet Grooming Cost Calculator
Calculate pet grooming cost.
Dog Breed Weight Calculator
Calculate expected dog breed weight.
Cat Litter Usage Calculator
Calculate monthly cat litter usage.
Advanced Bird Cage Size Calculator
Calculate optimal bird cage dimensions.
Reptile Temperature Calculator
Calculate optimal temperature for reptiles.
Advanced Pet Travel Cost Calculator
Calculate detailed pet travel cost.
Fish Tank Water Change Calculator
Calculate water change amount for fish tank.
Dog Treat Calorie Calculator
Calculate daily treat calorie allowance.
Pet Insurance Compare Calculator
Compare pet insurance plans.
Cat Feeding Schedule Calculator
Calculate optimal cat feeding schedule.
Advanced Dog Vaccination Schedule Calculator
Calculate vaccination schedule for your dog.
Pet Emergency Fund Calculator
Calculate pet emergency fund amount.
Fish Tank Size Calculator
Calculate proper fish tank size.
How Far Should I Walk My Dog? (km/day)
Calculate appropriate dog walking distance.
Aquarium Water Change Calculator
Calculate water change amount for aquarium.
Pet Travel Crate Calculator
Calculate travel crate size for pet.
Cat Water Intake Calculator (mL/day)
Calculate daily water intake for cat.
Compare Pet Insurance Plans Side by Side
Compare pet insurance plans.
Fish Tank Cycling Calculator
Track nitrogen cycle for new tank.
Cat Litter Calculator
Calculate cat litter needed.
Hamster Cage Calculator
Calculate proper cage size for hamster.
Hamster Wheel Size Calculator
Calculate optimal hamster wheel size.
Food portions for popular breeds (23)
Each link opens the portion calculator with the breed, food, life stage and goal preselected — add a weight for daily grams, cups and the 10% treat budget.
Dogs (17)
About Pet Care
This section gathers 75 free calculators for Pet Care on one page. The most popular are Dog Age in Human Years, Dog Food Amount Calculator and Aquarium Stocking Calculator, each running instantly in your browser with the formula and steps shown. The grid also covers Aquarium Size Calculator, so most common Pet Care questions have a matching tool. Every tool is free with no sign-up, so any number you copy can be verified yourself.
What you can calculate
Dog Age in Human Years, Dog Food Amount Calculator, Aquarium Stocking Calculator, Aquarium Size Calculator
Top Pet Care Calculators
Dog Age in Human Years by Size
Convert your dog's age to human years.
Pet Food Portion Calculator (RER/MER)
Science-based daily portions (RER/MER) for your dog or cat — exact grams and cups
Dog Food Amount Calculator per Meal
Calculate daily food amount for your dog.
Pet Treat Budget Calculator
Daily treat calorie budget for your dog or cat — the 10% rule with per-treat maximums in units and grams
Pet Food Transition Planner
A 7- or 10-day pet food switch plan — daily grams of each food at the same calories
FAQs about Pet Care
What is the best calculator in the Pet Care category?
The most popular Pet Care tools on this site are Dog Age in Human Years, Dog Food Amount Calculator and Aquarium Stocking Calculator, in that order. All are free, run instantly in your browser, and show their calculation steps — pick the closest to your case or try more than one.
Are the Pet Care calculators free to use?
Yes — all 75 tools in the Pet Care category are completely free: they run in your browser with no sign-up and never send your inputs anywhere. Enter your values and the result appears instantly, with the formula used shown.
How many calculators are in the Pet Care category?
The Pet Care category currently lists 75 free tools. The most used are Dog Age in Human Years, Dog Food Amount Calculator and Aquarium Stocking Calculator, and all of them are reachable directly from the grid on this page, with no registration required.