Free Pet Calculators for Dog, Cat & Other Pet Owners in the USA

Essential Pet Care Calculators

Everything you need to make informed decisions about your pet's health, nutrition, and wellness

Dog Age Calculator

Convert your dog's age to human years accurately

Dog Weight Calculator

Check if your dog is at a healthy weight

Dog Food Calculator

Calculate the right amount of food for your dog

Puppy Growth Calculator

Predict your puppy's adult size and weight

Dog Exercise Calculator

Find out how much exercise your dog needs

Dog Calories Calculator

Calculate daily caloric needs for your dog

Dog Breed Selector

Find the perfect dog breed for your lifestyle

Dog Lifespan Calculator

Estimate your dog's life expectancy

Dog Vaccination Schedule

Track and plan your dog's vaccination timeline

Dog Adoption Cost Calculator

Estimate the costs of adopting and caring for a dog

Why Pet Calculator?

We built Pet Calculator to make pet care planning simple, accessible, and free for everyone. Our mission is to help pet owners make informed decisions about their furry companions without the confusion of complex calculations or expensive consultations.

Whether you're a first-time pet parent or a seasoned dog owner, our tools provide the guidance you need to ensure your pet lives a healthy, happy life.

Free Forever

No extra fees, no subscriptions, and no premium levels. You can use all of our calculators for free, forever. We think that all pet owners should have access to good care tools.

No Signup Required

You can start calculating right away without making an account. No need to remember passwords, verify your email, or give out personal information. Just open a calculator and you'll get your results right away.

Built for US Pet Owners

Our calculators follow American veterinary standards, US-based cost estimates, and rules from groups like the AKC. Get results that are useful for where you live and how you live.

Mobile Friendly

You can use our tools on any device, like a smartphone, tablet, or desktop computer. Great for quick math at the vet's office, the pet store, or when you're doing research at home.

How It Works

Getting accurate pet care calculations has never been easier. Our streamlined process takes just seconds and requires no technical knowledge or special preparation.

Simply follow these three easy steps to get personalized recommendations for your pet's health, nutrition, and care needs.

Choose a Calculator

Browse our collection of 10+ specialized pet care tools designed for different needs.

Enter Your Pet's Details

Input basic information like age, weight, breed, or activity level.

Get Instant Results

Receive accurate, personalized calculations with helpful recommendations.

About Our Calculators

Each calculator in our collection is carefully designed to address specific aspects of pet care. From daily nutrition to long-term health planning, our tools cover the full spectrum of pet ownership needs.

All calculations are based on veterinary research, breed-specific data, and established guidelines from trusted pet health organizations.

Health & Age Calculators

Understanding your pet's life stage is crucial for providing appropriate care. Our Dog Age Calculator converts your dog's age to human years using the latest scientific research that accounts for breed size differences. The Dog Lifespan Calculator helps you understand your pet's expected longevity based on breed, size, and health factors, so you can plan for their golden years.

Nutrition & Weight Management

Proper nutrition is the foundation of pet health. Our Dog Food Calculator determines the right portion sizes based on your dog's weight, age, and activity level. The Dog Calories Calculator provides precise daily caloric needs, while the Dog Weight Calculator helps you monitor whether your pet is at a healthy weight.

Growth & Development Tools

For puppy owners, tracking growth is essential. Our Puppy Growth Calculator predicts your puppy's adult size and weight based on current measurements and breed information. Combined with our Dog Vaccination Schedule tool, you can ensure your growing pup stays on track with both physical development and essential immunizations.

Lifestyle & Planning Calculators

Planning to add a furry family member? Our Dog Breed Selector matches you with breeds that fit your lifestyle and activity preferences. The Dog Adoption Cost Calculator helps you budget for expenses, while the Dog Exercise Calculator ensures your pet gets the right amount of physical activity.

Pet Care Resources

Beyond calculators, we provide in-depth guides and articles to help you become a better pet parent. Our blog covers everything from basic care tips to advanced health topics.

Each article is researched and written to give you practical, actionable advice you can implement right away.

View All Articles →

10 Things to Know Before Getting a Dog

Essential guide for first-time dog owners covering costs, training, and daily care responsibilities.

Dog Vaccination Schedule (Month-by-Month)

Complete vaccination timeline to keep your puppy protected from common diseases.

Why Every Dog Owner Needs Pet Calculators

How digital tools can help you budget and plan for your pet's care needs.

Choosing the Right Dog Breed for Your Lifestyle

Find your perfect match based on activity level, living space, and family situation.

Frequently Asked Questions

Got questions? We've got answers. Here are the most common things pet owners ask us about our calculators and services.

Can't find what you're looking for? Feel free to contact us and we'll be happy to help.

Are these calculators accurate?

Yes, our calculators give you reliable estimates based on veterinary guidelines and proven formulas. We pull from research done by veterinary schools, the American Kennel Club, and peer-reviewed studies. They work great for everyday pet care decisions, but you should still talk to your vet about medical questions or health concerns specific to your pet.

What pets do you support?

Right now we focus mainly on dogs. We have calculators for age, weight, food portions, exercise, calories, breed matching, vaccinations, and adoption costs. We're working on cat calculators and tools for other pets like rabbits, birds, and small mammals. Check back soon or sign up for our newsletter to know when new calculators go live.

Is Pet Calculator really free?

Yep, totally free! There are no hidden fees, no premium versions, no subscriptions, and you don't need to sign up. We think every pet owner should have access to these tools no matter their budget. We keep the lights on through some ads on the site, which lets us keep improving and adding new calculators without charging you anything.

How often should I use these calculators?

It really depends on the calculator and where your pet is in life. For food and calorie calculators, run the numbers again when your pet's weight changes more than 5% or every couple months. If you have a puppy, check monthly to track their growth. The age calculator is fun to use around your pet's birthday each year. And recalculate exercise needs when your pet's activity, health, or age changes a lot.

Where does your data come from?

We base our calculations on veterinary research from accredited universities, breed standards from the AKC, nutritional guidelines from AAFCO, and pet care protocols from the AVMA. We check and update our formulas when new research comes out to make sure you're getting current information.

Can I use these calculators on my phone?

For sure! Our site works great on phones, tablets, and computers. You don't need to download an app. Just open our website in your browser and you're good to go. We made the mobile version easy to use so you can do quick calculations at the vet, the pet store, or wherever you are.

Do you save my pet's information?

Nope, we don't save anything. All the calculations happen right in your browser, and nothing you type gets sent to our servers or stored anywhere. Your privacy matters to us. You'll need to enter your info fresh each time you visit, so if you want to keep your results, just take a screenshot or write them down.

How do I know which calculator to use?

Every calculator on the homepage has a short description telling you what it does. Think about your main question. Want to know your dog's age in human years? Use the Age Calculator. Worried about weight? Try the Weight Calculator. Thinking about adopting? Check out the Breed Selector and Adoption Cost Calculator. Our blog also has articles that explain when and how to use each tool.

Can I suggest a new calculator?

Yes, please do! If you have an idea for a calculator that would help pet owners, send it our way through the contact page. We read every suggestion and build new tools based on what people ask for most. A lot of our current calculators actually came from user ideas.

Are the cost estimates accurate for my area?

Our cost calculators use national average prices for the US, so they give you a solid ballpark for most places. That said, pet care costs vary a lot by location. Big cities like New York or San Francisco usually cost more than rural areas. Use our numbers as a starting point and adjust for your local prices. The comparisons between options are still useful no matter where you live.

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