---
title: "Dog Breed Comparison Tool — Compare Ageing & Human Years | Dog Years"
description: "Compare two dog breeds side by side: ageing curve, human-year equivalent age, senior life stage and expected lifespan, based on The Royal Kennel Club's official guidance."
image: "https://dogyears.info/result-image.png"
url: "https://dogyears.info/compare"
---

# Dog Breed Comparison Tool

Compare two dog breeds side by side — ageing curve, human-year equivalent, senior life stage and expected lifespan — using The Royal Kennel Club's official size-adjusted guidance.

This page includes an interactive breed comparison tool: https://dogyears.info/compare.

Popular comparisons: [Labrador vs Golden Retriever](https://dogyears.info/compare?a=Labrador+Retriever&b=Golden+Retriever) [Labrador vs German Shepherd](https://dogyears.info/compare?a=Labrador+Retriever&b=German+Shepherd+Dog) [French Bulldog vs Pug](https://dogyears.info/compare?a=French+Bulldog&b=Pug) [Border Collie vs German Shepherd](https://dogyears.info/compare?a=Border+Collie&b=German+Shepherd+Dog) [Staffie vs French Bulldog](https://dogyears.info/compare?a=Staffordshire+Bull+Terrier&b=French+Bulldog) [Cocker Spaniel vs Jack Russell](https://dogyears.info/compare?a=Cocker+Spaniel&b=Jack+Russell+Terrier) [Golden Retriever vs Border Collie](https://dogyears.info/compare?a=Golden+Retriever&b=Border+Collie)

### Want an exact answer for your own dog?

Use the calculator for a personalised result, including your dog's name and precise age.

[Go to the calculator](https://dogyears.info/)

## How this comparison works

The Royal Kennel Club's ageing guidance is size-based, not breed-based: every breed is assigned to one of four size bands (small, medium, large, giant), and all dogs within the same band age at the same rate. So two breeds in the same size band — a Labrador Retriever and a Golden Retriever, for example — follow an identical dog-years-to-human-years curve. The meaningful differences between same-band breeds are things like expected lifespan and typical health concerns, not the year-by-year conversion itself. Breeds in different size bands follow different curves — see the table above once you've picked two breeds.

Don't see the breed you're after? The [calculator](https://dogyears.info/) covers over 225 Royal Kennel Club-recognised breeds, and the [guides hub](https://dogyears.info/guides) has in-depth ageing charts for ten popular breeds.

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