🐕 Tell us about your dog

Breed Current age (years, optional) Body condition

Underweight

Ideal

Overweight

Spayed / neutered

Associated with reduced risk of certain cancers and accidents

Regular dental care

Brushing and/or professional cleanings

Mostly indoor living

Lower exposure to accidents, extreme weather, parasites

Regular vet check-ups

At least once a year, twice for seniors

Estimated life expectancy

— years

—

0%

life stage progress

—

years remaining (est.)

PuppyAdultMatureSenior

Current life stage: —

This is a statistical estimate based on breed/size averages and general longevity research — not a medical prediction. Genetics, individual health conditions, and veterinary care all affect an individual dog's actual lifespan. Always consult your veterinarian for health-specific guidance.

🏆 Why this calculator is different

📊Personalized factors, not a static lookup table — most calculators just map "breed → one number." This one adjusts for weight, spay/neuter status, dental care, indoor living and vet check-ups.
🐕Works for mixed breeds — pick a size category instead of guessing a purebred match, which most breed-only calculators don't handle well.
📈Shows current life-stage progress, not just a final number — see roughly where your dog sits on the puppy → senior timeline.
🔍Transparent factor breakdown — see exactly which habits are adding or subtracting estimated years, so you know what you can actually influence.
🖨️Printable summary to keep or share with your vet during check-ups.
🔒No sign-up, no data stored — everything runs in your browser only.

❓ Frequently asked questions

How long do dogs typically live?

Most dogs live between 10 and 14 years on average, though this varies significantly by size — smaller breeds often live longer (sometimes 15+ years) while giant breeds tend to have shorter lifespans, often 8 to 10 years.

Do mixed-breed dogs live longer than purebreds?

Some research suggests mixed-breed dogs may have a slight longevity advantage, partly due to greater genetic diversity reducing the risk of certain inherited conditions common in some purebred lines, though individual health and care still matter most.

Does spaying or neutering affect a dog's lifespan?

Multiple studies have found spayed and neutered dogs tend to live somewhat longer on average, largely due to a reduced risk of certain reproductive cancers and fewer roaming-related accidents, though the effect can vary by breed and age at the procedure.

🐾❤️ Dog Life Expectancy Calculator