Find out how old your dog is in human years based on age and adult size. You’ll also see their approximate life stage and learn why different dogs age at different rates.
Size-aware estimatePuppy to senior life stagesInstant results
Results are general estimates and can vary by breed, genetics, lifestyle, and individual health.
Calculate Your Dog's Human Age
Enter your dog's age and select their approximate adult size.
Adult dog size
Size selected automatically from breed. You can still change it.
Estimated human age
0 years
Life Stage: Adult
Size-aware estimateDifferent body sizes age at different rates.
Life-stage guidanceSee whether your dog is a puppy, adult, mature, or senior.
Built for pet parentsFast, simple, and easy to understand.
Dogs don't age at the same speed.Size, breed, genetics, and health all play a role in how a dog moves through different life stages.
Dog Age Chart
Dog Years to Human Years
Dogs mature quickly during their first two years. After that, body size becomes increasingly important when estimating their equivalent human age.
How old is a dog in human years?
A one-year-old dog is generally much closer developmentally to a human teenager than to a seven-year-old child. By age two, many dogs are comparable to young adults, and later aging varies more by size and breed.
Dog Age
Small Dog
Medium Dog
Large Dog
Giant Dog
1 year
15
15
15
15
2 years
24
24
24
24
3 years
28
28
29
30
5 years
36
37
40
42
7 years
44
47
50
54
10 years
56
60
66
72
12 years
64
69
77
84
15 years
76
83
94
102
How It Works
Why This Calculator Doesn't Just Multiply by Seven
Dog aging is not linear. Dogs mature rapidly early in life, then age at different rates depending partly on body size.
1
Enter your dog's age
Use months for puppies or years for adult dogs.
2
Choose adult size
Small, medium, large, and giant dogs tend to age differently later in life.
3
See age and life stage
Get an estimated human-age equivalent and your dog's likely current life stage.
Size & Aging
Why Dog Size Changes the Result
Small and large dogs may be the same chronological age but still be at different biological life stages. Smaller dogs generally have longer average lifespans, while large and giant breeds often enter their senior years earlier.
That’s why this calculator uses adult body size rather than applying one fixed formula to every dog.
Why “1 Dog Year = 7 Human Years” Doesn’t Really Work
The traditional seven-year rule is easy to remember, but it oversimplifies how dogs develop. Dogs mature much faster than humans during the first part of their lives. A one-year-old dog may already be physically and behaviorally closer to a human teenager than to a young child.
After the first two years, the difference between smaller and larger dogs becomes more noticeable. Genetics, breed, activity, nutrition, and overall health can also influence how an individual dog ages.
Senior Life Stage
When Is a Dog Considered a Senior?
There isn’t one senior age that applies to every dog. Small dogs may not enter their senior years until around age 10 or later, while some large and giant breeds may be considered senior several years earlier.
Age-related changes can include shifts in activity, sleep, mobility, weight, appetite, recovery after exercise, or daily behavior. Regular veterinary checkups remain the best way to understand your individual dog’s changing needs.
Quick answers to common questions about dog years, human years, and canine life stages.
How do I calculate my dog's age in human years?
Enter your dog’s chronological age and approximate adult size. The calculator estimates a human-age equivalent based on faster development during the first two years and size-dependent aging later in life.
Is one dog year really equal to seven human years?
No. Dogs mature much more rapidly than humans during their early years, while later aging varies considerably by size, breed, genetics, lifestyle, and health.
How old is a 5-year-old dog in human years?
A five-year-old dog may be roughly comparable to a human in their mid-to-late 30s or early 40s. Larger dogs generally receive a slightly higher human-age estimate than smaller dogs.
How old is a 10-year-old dog in human years?
Depending on body size, a ten-year-old dog may be roughly comparable to a human in their mid-50s through early 70s.
Does breed affect dog age calculations?
Yes. Breed and body size can influence average lifespan and aging patterns. Size is useful for a general estimate, but dogs of the same size may still age differently.
Can I use this calculator for a puppy?
Yes. Select months instead of years and enter your puppy’s current age. Puppy development changes quickly, so the result should be treated as a general developmental comparison.
Disclaimer:
This calculator provides general educational estimates only. Human-age equivalents are approximate and should not be used to diagnose health, developmental, or age-related conditions. Consult a veterinarian for advice specific to your dog.
Understand more than just your dog's age.
SATELLAI helps pet parents better understand their dogs’ location, activity, routines, and everyday wellbeing through connected smart pet technology.
Esto nos ayuda a determinar el mejor ajuste del cuello. Nuestros collares se ajustan a cuellos de 14 a 30 pulgadas.
¿Necesita urgentemente la función de valla virtual?
Esto nos ayuda a determinar el mejor producto para su situación.
Ingresa tu perfil de perro
Según la raza, la edad y el peso de su perro, estimaremos si el tamaño del cuello coincide.
2 mes15 año
Estimando el tamaño del cuello...
Tamaño estimado del cuello
Aquí está el rango estimado de tamaño del cuello según la raza, la edad y el peso de su perro.
Rango de cuello: 14-30 pulgadas
Parece una gran opción
Cerca del límite de tamaño
Puede quedar fuera de nuestra gama de collares.
Este rango de cuello estimado se ubica cómodamente dentro de nuestro rango de tamaño de cuello.
Esta estimación está cerca del límite de nuestro rango de tallas de collar. Para garantizar un ajuste adecuado, mida el cuello de su perro antes de comprarlo.
Esta estimación puede estar fuera de nuestro rango de collares de 14 a 30 pulgadas. Mide el cuello de tu perro antes de seguir adelante.
Esto es sólo una estimación. Para obtener el mejor ajuste, mida el cuello de su perro antes de comprarlo.
¿Qué tamaño tiene el área donde planea instalar la cerca virtual?
Esto nos ayuda a recomendar el producto adecuado para su espacio. Si no está seguro del tamaño de la cerca, utilice Google Maps para medir el tamaño de su cerca (busque su dirección → haga clic derecho → "Medir distancia"), o contáctenos; podemos ayudarlo a medirla por usted. support@satellai.com | 1-888-595-8226
¿Qué tan cerca está su casa del límite de la cerca?
La distancia entre su casa y el límite de la cerca afecta la selección de productos. Si no está seguro de la distancia entre su casa y el límite de la cerca, utilice Google Maps para medir (busque su dirección → haga clic derecho → "Medir distancia") o contáctenos; podemos ayudarlo a medirla. support@satellai.com | 1-888-595-8226
¿Cómo está la señal de tu red en casa?
Nuestros rastreadores GPS utilizan redes celulares. La intensidad de la señal afecta el rendimiento de la cerca virtual.
¿Necesita urgentemente la función de valla virtual?
Las señales de GPS en su entorno pueden ser menos estables, lo que podría afectar la precisión de la cerca virtual.
¿Cuál de las siguientes opciones describe mejor el entorno de su hogar?
El entorno circundante afecta la precisión del GPS y el rendimiento de la cerca virtual.
¡Satellai Collar Go es perfecto para ti!
Nuestro rastreador GPS compacto diseñado para perros más pequeños con seguimiento de ubicación en tiempo real.
El tamaño del cuello de su mascota puede exceder el tamaño máximo del SATELLAI Collar Go, pero el SATELLAI Collar Go puede adaptarse a cualquier banda de hasta 25 mm de ancho.
¡Satellai Collar + Beacon es tu mejor opción!
El collar con una baliza adicional para un mejor monitoreo de límites en patios más pequeños.
¡Se recomienda el collar Satellai para usted!
Nuestro rastreador GPS con todas las funciones y capacidades de cerca virtual para jardines medianos y grandes.
🐾
Puede que todavía no tengamos el ajuste adecuado
Según sus respuestas, es posible que nuestros productos actuales no sean la mejor opción. Nos encantaría ayudarle a encontrar la solución adecuada; comuníquese con nuestro equipo de soporte para obtener asistencia personalizada.
Tamaño del cuello demasiado grandePatio demasiado pequeño para una cerca virtualÁrea de señal débilEntorno desafianteEntorno incierto
¿Necesitar ayuda? Póngase en contacto con nuestro equipo de soporte:
Nuestro rastreador GPS compacto está diseñado específicamente para perros más pequeños. Ligero y cómodo para cuellos de menos de 14 pulgadas.
🐾
Es posible que nuestros collares no le queden bien a su perro.
Nuestros productos Collar están diseñados para perros con una circunferencia de cuello de entre 14 y 30 pulgadas.
que puedes hacer
Si su perro aún está creciendo, vuelva a consultar cuando alcance su tamaño completo. Muchas razas de tamaño mediano alcanzan un cuello de más de 14 pulgadas en la edad adulta.
¿Necesitar ayuda? Póngase en contacto con nuestro equipo de soporte:
Al elegir una selección, se actualiza la página completa.
Se abre en una nueva ventana.
Cookie consent
We and our partners, including Shopify, use cookies and other technologies to personalize your experience, show you ads, and perform analytics, and we will not use cookies or other technologies for these purposes unless you accept them. Learn more in our Privacy Policy and Cookie Policy.
Cookie Settings
Choose which optional cookies and similar technologies you allow. Your choice applies to future tracking and can be changed at any time. Turning off optional cookies does not prevent you from shopping or checking out. Learn more in our Privacy Policy and Cookie Policy.
Strictly Necessary
Required for security, shopping cart, checkout, fraud prevention, language and regional settings. These are always on because the store cannot operate without them.
View cookies and services
Shopify storefront and checkout — maintains cart contents, checkout progress, customer session, localization and security protections.
SATELLAI consent preference — stores your choice in satellai_consent so it can be honored on later visits.
Functional
Supports optional store features such as order tracking, reviews and purchase-protection tools. Turning these off may limit those features, but does not stop checkout.
View services affected
AfterShip Tracking — displays and supports order-tracking features.
Judge.me Reviews — displays reviews and supports review interactions.
Measures how visitors use the store so we can improve content, performance and checkout. This includes page views, navigation, product views, cart actions, checkout steps, clicks, scroll depth and error or performance signals.
View analytics services
Google Analytics 4 via Google Tag Manager — records aggregate visits and configured ecommerce events, including product, cart and checkout interactions.
Microsoft Clarity — helps us understand usability and site performance through aggregated behavioral insights.
Ptengine — measures visitor behavior and campaign performance.
Marketing
Allows advertising and affiliate partners to measure campaign performance, attribute purchases and personalize advertising. Turning this off does not reduce the number of ads you see, but they may be less relevant.
View advertising and affiliate services
Meta, Google & YouTube, Reddit Ads, Nextdoor, Mobupps, NewsBreak and tvScientific — advertising delivery, conversion measurement, attribution and campaign optimization.
Klaviyo — marketing communications, audience measurement and onsite messaging.
impact.com, GOAFFPRO, AddShoppers, FOSHO and QuickCEP — affiliate, referral and campaign measurement.
Google Tag Manager — deploys configured marketing tags, including Meta, Reddit, Nextdoor and Mobupps conversion events.