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Breed size comparison
Two or three breeds on one weight and height chart.
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Free calculators and charts for dog owners
There are 18 of them: 13 calculators and charts that do arithmetic, and 5 quizzes that ask questions and return a verdict. All free, no sign-up, nothing stored. They answer the questions that have a number or a decision at the end of them: how big will this puppy get, how much should it eat, what size crate, what will the whole thing cost, and which breed actually fits the home you have.
Still choosing a breed
Put candidates on the same scale before you commit to one.
Working out the money
Turn a breed and a city into a monthly number you can check against your budget.
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Dog cost calculator
Monthly, first-year and five-year cost of a breed.
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Breed cost comparison
Two breeds compared on cost, adjusted for your city.
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Dog food cost per calorie
Cost per 1,000 kcal, not price per bag.
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Quiz
Is pet insurance worth it?
Whether a policy pays off for your dog, in 60 seconds.
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The first year
A puppy is in the house, or about to be, and everything has to be bought once rather than twice.
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Puppy weight calculator
How big will this puppy get? Enter age and weight.
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Dog crate, collar and harness size charts
Crate, collar and harness sizes from a measurement.
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Puppy starter planner
A first-30-days plan built for your breed and home.
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Dog crate size calculator
Measure the dog, get the crate size that actually fits.
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Quiz
Dog name compass
A name that suits the dog and survives being shouted.
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Living with the dog
The questions that come back every few months for the rest of the dog's life.
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Dog age calculator
Dog years to human years, adjusted for size.
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Dog food calculator
Calories, cups and meals a day for your dog.
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Dog body condition score
Is your dog the right weight? Check by hand, not scales.
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Dog treat calculator
How many treats a day fit inside the 10 percent rule.
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Dry matter basis calculator
Compare a canned food and a kibble on the same footing.
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Quiz
Dog behaviour check
Normal, bored, or anxiety worth treating?
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Anxiety level check
Mild enough for home, or time for a professional?
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Which one answers your question
Start from the question you actually have. Each row below names what the tool asks you for and what it hands back, so you can tell before you click whether it needs a number you do not have yet.
| Your question | You give it | It gives you |
|---|---|---|
| How big will my puppy get? | age in weeks and today's weight | estimated adult weight, checked against the breed range |
| How old is my dog in human years? | age and size class | human-year equivalent and when senior care usually starts |
| What size crate does my dog need? | a weight or a breed | crate length, collar neck size and harness chest size |
| How much bigger is one breed than another? | two or three breeds | adult weight, height and lifespan on one chart |
| How much should I feed my dog? | weight, life stage and the calories per cup on your bag | daily calories, cups per day and meals per day |
| What do I do in the first month with a puppy? | breed, age, your home and your schedule | a first-30-days plan, a shopping list and the month's cost |
| Is my dog overweight? | three hands-on checks: ribs, waist and belly | a score from 1 to 9, and whether it sits in the ideal band |
| How much does a dog cost per month? | a breed, a US city and your monthly budget | monthly, first-year and five-year cost, and whether your budget covers it |
| Which breed is cheaper to own? | two breeds and a city | first-year and monthly ranges side by side |
| How many treats a day is too many? | weight, life stage, and the kcal per treat on the packet | the day's treat calorie ceiling and how many of your treats fit inside it |
| Is this canned food really lower in protein than kibble? | the guaranteed analysis printed on two labels | protein, fat and fibre on a dry matter basis, side by side |
| Which dog food is actually cheaper? | bag price, bag weight and the label's calorie figure for each food | cost per 1,000 kcal and cost per day for each |
| What size crate does my dog need? | your dog's measured height and nose-to-tail length | the minimum interior crate height and length, as the published range |
| What dog breed is right for me? | eight questions about your life | ranked breed matches with the trade-offs named |
| What should I name my dog? | your dog and your taste in names | a shortlist you can compare, test and narrow |
| Is pet insurance worth it? | breed, age and your appetite for risk | insure or self-insure, with the reason |
| Is my dog's behaviour normal? | what the dog does, and when | normal, boredom or anxiety, and what to do next |
| How bad is my dog's separation anxiety? | the signs you are seeing | a severity band and whether to get help |
Reference tables and other guides
Four plain data tables that sit next to the calculators above: nothing to type in, just the breed figures and conversions on one page.
- Dog weight chart by breedAdult weight, height and lifespan for every breed, grouped by size.
- Dog life stages chartWhen a dog stops being a puppy and when senior care usually starts, by size.
- Shedding and grooming chartCoat type, shedding level and grooming need for every breed.
- Weight conversion chart (kg/lb)Kilograms to pounds and back, plus every breed's range in both units.
Three more hubs live outside the tools cluster: can dogs eat this? food safety pages, senior dog care, and dog policies for airlines, hotels, stores and national parks.
How these tools are built
Every calculation here is arithmetic you could do yourself, and each page shows the table or formula it uses rather than hiding it behind a result. The breed figures come from the same 66 breed records that drive our breed profiles and cost guides, so a number here matches the number there. Where a tool estimates rather than measures - adult weight from a puppy weight, cost from a city average - it says so on the page and shows the range rather than a single figure.
Nothing you type is stored, sent anywhere, or used to build a profile. There are deliberately no medication, dosage or toxicity calculators here: those are veterinary decisions, and a web form is the wrong place to make them. How we research and source everything else is set out in our editorial policy.
Not sure which breed yet?
Most of the tools above assume you already know the breed. If you do not, the lifestyle quiz works the other way round: it asks about your home, hours and activity level and returns the breeds that fit, with the trade-offs of each one named rather than hidden.