zooming pawsPuppy calculator

Free pet calculators

Six calculators for dog and cat owners. All free, none needs an account, and every figure behind them has a published source you can check.

all free, no account needed
6 toolsall free, no account needed
each with a published source
107 figureseach with a published source
everything runs in your browser
0 data senteverything runs in your browser

Size and growth

Growing up

Both tools run on the same growth model, built from the open data behind a published veterinary growth standard.

Puppy weight calculator

Enter age and weight. Get the adult weight and a growth chart.

Open calculator

Breed growth charts

Weight-by-age charts for 24 popular breeds.

See the breeds

Dates

Breeding

Dates only, taken from the Merck Veterinary Manual. No advice on care or complications.

Pregnancy calculator

Enter the mating date. Get the due date for a dog or cat.

Open calculator

Heat cycle calculator

Enter the last heat. See when the next one is likely to start.

Open calculator

Money

Grooming

Money questions, answered from published US price and etiquette guides, with every source named.

Groomer tip calculator

Enter the bill. See a fair tip for salon, mobile and holiday visits.

Open calculator

Grooming cost estimator

Pick size, coat and service. See a price range for salon or mobile.

Open calculator

The rules

How these calculators work

Every calculation happens in your own browser. Nothing you type is sent anywhere, stored, or used to build a profile, because there is no server doing the work and no account to attach it to.

Every number a calculator uses comes from a published source, and each one is named on the page that uses it. Where we could not find a source, we say so and leave the figure out rather than filling the gap. Where we have had to round something ourselves, it is marked as a working estimate.

None of this is veterinary advice. The calculators give planning figures. For anything about your animal's health, ask your vet.

The full method for each tool is written up on the how we calculate page.

24 breeds

Growth charts by breed

The puppy weight calculator, pre-set to a breed, with the adult weight and height range from the kennel club standard beside it.

See all breed charts

Last reviewed . Estimate only. For health questions, ask your vet.