When picking out a new puppy, one of your first questions is likely to be “how big will my Sheepadoodle get?” and that can be a tricky question to answer. As a hybrid breed, Sheepadoodle size can be a little more unpredictable than purebred dogs. Luckily though, you’re not the first person to want to know.

Through careful observation of multiple generations of Doodles, canine experts have compiled useful size guides to give us approximate numbers for Toy, Mini, Medium, Standard, and Giant varieties. Building on such knowledge, we have come up with a handy interactive puppy growth chart and calculator to help you predict your Sheepadoodle’s potential adult weight.

The Different Types of Sheepadoodles

For those still in the early stage of researching a possible new pet, a Sheepadoodle is a cross between an Old English Sheepdog (OES) and a Poodle. There’s no doubt that these guys are seriously cute, but there can be a lot of variation in their adult size and weight, as well as in their coat and furnishings (this is what we call the hair on their face).


Such differences occur because of variations in the parent breeds. For instance, there are three distinct sizes of Poodle: Standard, Miniature, and Toy, and these are responsible for Standard, Mini/Medium, and Toy Sheepadoodles, respectively.


Beyond that, there are also F1, F1B, and F2, F2B type Sheepadoodles. These refer to which generation the puppy is from, or how far away they are from the breed’s so-called “parent dogs” (the OES and the Poodle).  

Let’s take a quick look at the Sheepadoodle generations and what each of them means:

1st Parent2nd Parent% Old English Sheepdog*% Poodle*
F1 Sheepadoodle (first-generation)Old English SheepdogPoodle50%50%
F1B Sheepadoodle (first-generation backcross)F1 SheepadoodlePoodle25%75%
F1BB Sheepadoodle (first-generation backcross backcross)F1B SheepadoodlePoodle12.5%87.5%
F2 Sheepadoodle (second-generation)F1 SheepadoodleF1 Sheepadoodle50%50%
F2B Sheepadoodle (second-generation backcross)F1 SheepadoodleF1B Sheepadoodle37.5%62.5%
F2B Sheepadoodle (alternate cross)F2 SheepadoodlePoodle25%75%
F3 / Multigen SheepadoodleF1B Sheepadoodle or higherF1B Sheepadoodle or higherVariesVaries
*These are generic calculations only – genetics are rarely mathematically accurate.
Doodle Generations explained 2022

With each generation, we can achieve more control over a Sheepadoodle’s size and other characteristics, such as their coat type and appearance. For instance, if a breeder’s goal is to achieve a smaller Mini Sheepadoodle, they can breed an F1b Sheepadoodle that has a Mini Sheepadoodle parent and a Miniature Poodle parent. 

Sheepadoodle Size Charts and Size Predictions

Whichever Doodle you opt for, anticipating their size is vital for all kinds of reasons:

  1. It will tell you whether they will comfortably thrive in your house.
  2. You will know how much food they are likely to consume daily.
  3. It helps you to pick out the perfect gear and accessories for them.

With all these considerations and more, it’s only natural for you to be asking this crucial question. That’s why we’ve collected together all of this information that will enable you to make an educated guess. 

Toy SheepadoodleMini/Medium SheepadoodleStandard Sheepadoodle
Weight10-25 pounds25-55 pounds55–85 pounds
Height*15 inches or less15-22 inches22-27 inches
Age at Full-Grown7.5-11 Months11-13 months12.5-16 Months
*A dog’s height is measured from their withers, which is the highest part of their shoulder blades.

The below Sheepadoodle size chart / graph shows the average weights by age (in weeks), by size of Sheepadoodle. It shows Sheepadoodle weight data from our Doodle Weight Prediction Calculator.

As of October 24, 2022, we’ve received over 18,000 accurate Sheepadoodle weight submissions through our calculator.

Sheepadoodle Size Charts & Growth Patterns

As with most dog breeds, Sheepadoodles have their fastest growth period in the first six months of their lives. During this time, they will get to around 50% of their adult weight.

This is why it’s particularly important that your Sheepadoodle puppy gets the correct nourishment he needs to grow that adorable little body into a healthy adult one. Check out our guides on best dog food for Doodle puppies here.

The age at which a Sheepadoodle reaches its maximum height varies depending on the type. With a smaller dog, this will happen much sooner, at around 6-9 months. With a larger one, it could take up to 16 months. After this, they will continue to grow in girth and weight for a little longer.

Toy Sheepadoodles

Toy Sheepadoodles generally reach half their adult weight at around 3.5 and 5 months old. They will then attain their full adult weight between 11-13 months.

You can get a rough estimate of their potential adult weight at 18 weeks simply by taking what they weigh at that age and multiplying it by two.

Toy  Sheepadoodle Size Formula

Mini and Medium Sheepadoodles

Medium and Mini Sheepadoodles generally reach half their adult weight between 3.5 and 5 months old. They will then attain their full adult weight between 11-13 months.

You can get a rough estimate of their potential adult weight at 18 weeks simply by taking what they weigh at that age and multiplying it by two.

Mini Medium Sheepadoodle Size Formula

Standard Sheepadoodles

Standard Sheepadoodles generally reach half their adult weight between 4.5 and 6 months old. They will then attain their full adult weight between 12.5-16 months.

You can get a rough estimate of their potential adult weight at 23 weeks simply by taking what they weigh at that age and multiplying it by two.

Standard Sheepadoodle Size Formula

Alternative Formula

A different formula you could use for any size of Sheepadoodle is:

Alternative Doodle Weight Formula

At What Age Are Sheepadoodles Considered Fully Grown?

So, as you can see, the age at which a Sheepadoodle is considered full-grown has a lot to do with their size. This depends on whether they were bred from a Standard, Miniature, or Toy Poodle.

While Toy, Medium, and Mini Sheepadoodles will likely reach full maturity in the first year of their lives, the larger the dog, the longer this process will take. Your Standard Sheepadoodle may not get to their adult height and weight until they are closer to 1.5 years old.

So, while growth patterns can be unpredictable in Doodles, we can use knowledge gathered by breeders and other experts to make some pretty close estimations of their final weight and size.

Hopefully, the information included here proves useful for you in gauging just how big you might expect your pup to get. Although, no doubt you will love them just the same no matter how big or small they may be!

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The information on this page is for informational purposes only. It is not intended to be a substitute for qualified professional veterinary advice, diagnosis, or treatment. Always seek the advice of your veterinarian or other qualified animal health provider with any questions you may have.

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4 thoughts on “Sheepadoodle Size Chart With 18,000+ Sheepadoodle Weight Data Points


My F1 Standard male puppy was 10.6 pounds at 6 weeks, how big do you think he’ll be?

January 27, 2021 at 11:56 pm
Sharon Weyrens

My F1 Standard male puppy was 16.3 pounds at 10 weeks. He was 49 pounds at 23 weeks. According to the weight and size charts on Doodle Doods, he will get to be about 98 pounds of pure goofy love. Your puppy could reach 85 pounds if you use the formula 16.3 lbs divided by 10 = 1.63 X 52 = 84.76 pounds of love.

Good luck and have fun with your puppy!

May 19, 2021 at 6:30 pm
Sharon Weyrens Reply

Sorry, I got the numbers mixed up between your puppy and mine. You pup will probably reach 92 pounds fully grown. The formula: 10.6 / 6 = 1.7667 X 52 = 91.8667 pounds.

May 19, 2021 at 6:32 pm
Sachse Reply

Hi my F1B sheepadoodle was 9.9lbs at 6wks. He is currently 24wks old and weighs 63lbs! How big is this guy gonna get? Lol

May 27, 2021 at 12:58 pm