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Buddylio

Useful tools, no account required

Dog Tools

Understand your dog’s age and keep useful changes in one place. Every tool is free and works in your browser.

a terrier, Labrador and senior Australian Shepherd relaxing together in a warm home
Beagle, Labrador and gray Great Dane representing different dog sizes and life stages

Scientific Dog Age Calculator

See your dog’s life stage and human age range using breed and size.

Example result
Human age range64 to 72Mature adult
Calculate dog age →
brown and white dog standing on a home pet scale

Dog Weight Tracker

Save repeat measurements and see the change on one clear timeline.

Example result
Latest48.6 lb
Track weight →
gray muzzled senior dog resting beside its owner

Senior Dog Health Tracker

Keep dated notes about eating, movement, sleep, orientation and comfort.

Example result
Week 1Week 2Week 4
Start a check in →

Which tool fits your question

Start with the dog age calculator when you want context for where your dog sits in life. Size and breed change how quickly dogs move through life stages, so a seven year old small dog and a seven year old giant breed are rarely in the same place.

Use the weight tracker when you want to see a direction rather than a single number. One weigh in tells you very little. Four or five spread over a few months show whether the line is steady, drifting up, or drifting down, which is the part worth mentioning at a checkup.

Use the senior tracker when the useful information is a pattern instead of a number. Dated notes about eating, movement, sleep, orientation and comfort turn a vague sense that something has shifted into something you can actually show someone.

The tools work well together. Bring the age range for context, the weight line for direction, and the dated notes for detail. You can print any result or email it to yourself, and nothing leaves your browser until you choose to send it.

See the result first

Every result and history is visible without entering an email address.

Private by default

Tracker entries stay in this browser unless you choose to email a report.

Clear limits

These tools organize estimates and observations. They do not diagnose or replace veterinary care.