How Big is a Full Grown Cockapoo? Sizes Explained
Cockapoos are one of the most lovable and intelligent mixed dog breeds, combining the charm of Cocker Spaniels with the cleverness of Poodles. If you’re considering adding a Cockapoo puppy to your family or already have one you may wonder: How big is a full grown Cockapoo?
In this detailed guide, we break down everything from size classifications to weight estimates and growth timelines for each type of Cockapoo. Whether you’re curious about the Teacup Cockapoo size or the full-grown Maxi Cockapoo, we’ve got you covered.
Quick Summary: Cockapoo Size Chart
Type | Weight (Adult) | Height (Adult) | Fully Grown Age |
Teacup Cockapoo | 3–6 lbs | 6–8 inches | 6–8 months |
Toy Cockapoo | 6–12 lbs | 8–10 inches | 8–12 months |
Mini Cockapoo | 13–18 lbs | 10–14 inches | 12 months |
Standard Cockapoo (Maxi) | 19–26 lbs | 14–18 inches | 12–24 months |
How Big is a Full Grown Cockapoo?
A full grown Cockapoo typically stands between 10 to 15 inches tall at the shoulder and weighs between 12 to 24 pounds. However, this can vary widely depending on the dog’s specific type—Teacup, Toy, Miniature, or Standard.

1. Teacup Cockapoo Size
- Adult Weight: 3–6 lbs
- Adult Height: 6–8 inches
- Growth Completion: 6–8 months
The Teacup Cockapoo is the tiniest version and is often bred using the smallest Toy Poodles and Cocker Spaniels. Because of their fragile size, they are prone to health problems and require gentle handling and specialized care. Note: Always avoid unethical breeders who prioritize size over health.
2. Toy Cockapoo Size
- Adult Weight: 6–12 lbs
- Adult Height: 8–10 inches
- Growth Completion: 8–12 months
Toy Cockapoos are small, compact, and great for small apartments. They inherit a lot of energy and intelligence from their Toy Poodle parent and are suitable for families with children.

3. Mini Cockapoo Size
- Adult Weight: 13–18 lbs
- Adult Height: 10–14 inches
- Growth Completion: 12 months
The Miniature Cockapoo is a popular size, blending manageable size with active personality. They typically weigh 4–6 pounds at 8 weeks and grow into a well-balanced, medium-sized dog.
4. Standard Cockapoo / Maxi Cockapoo Size
- Adult Weight: 19–26 lbs
- Adult Height: 14–18 inches
- Growth Completion: 12–24 months

The Standard or Maxi Cockapoo is the largest size variety. These dogs are often bred using Standard Poodles and can be quite energetic, requiring daily exercise.
When is a Cockapoo Fully Grown?
Most Cockapoos reach their full size between 6 to 24 months, depending on their category:
- Teacup & Toy Cockapoos: 6–12 months
- Mini Cockapoos: Around 12 months
- Standard Cockapoos: 12–24 months
The most significant growth occurs in the first 4–5 months.

What Factors Affect Cockapoo Size?
1. Genetics
If both parents are small, the puppy is more likely to be small. A Standard Poodle parent will likely result in a larger Cockapoo.
2. Breed Generation (F1, F1B, etc.)
- F1 Cockapoo = Cocker Spaniel + Poodle
- F1B Cockapoo = F1 Cockapoo + Poodle
F1B breeds tend to take after the Poodle parent more in size and coat type.
3. Nutrition
High-quality puppy food supports healthy bones, muscles, and brain development.

4. Health Conditions
Cockapoos with underlying health issues may have stunted growth.
5. Gender
Males are slightly larger than females, especially in Mini and Standard Cockapoos.

Cockapoo Adult Weight Estimates
- Teacup: 3–6 lbs
- Toy: 6–12 lbs
- Mini: 13–18 lbs
- Standard: 19–26 lbs
Pro Tip: Monitor your puppy’s weight using a dog weight calculator or veterinary chart. If you notice sudden changes, consult a vet.

Parent Breeds Matter: Cocker Spaniel & Poodle
Cocker Spaniel
Gentle, affectionate, and energetic. Known for their long silky ears and hunting instincts.
Poodle
Highly intelligent, trainable, and hypoallergenic. Available in Toy, Mini, and Standard sizes, making them a perfect parent for size variations in Cockapoos.
How to Support Your Cockapoo’s Growth

- Balanced Diet: Age-appropriate, nutrient-rich food
- Daily Exercise: Walks, playtime, and agility training
- Grooming: Regular brushing to prevent matting
- Socialization: Early exposure to new people and environments
- Vet Checkups: Regular health screenings, vaccinations, and parasite control
- Mental Stimulation: Puzzle toys, obedience training
Why It’s Hard to Predict Cockapoo Size
Due to the variety in Poodle sizes and generation mixes (F1, F1B, F2), predicting Cockapoo adult size is challenging. Even littermates can vary!

Want predictability? Adopt a Cockapoo over 1 year old.
FAQs
Are Cockapoos Good Family Dogs?
Yes, they are affectionate, loyal, and great with kids.
Are Cockapoos Expensive?
Prices range from $800 to $3000, depending on breeder, location, and size.
How Long Do Cockapoos Live?
Typically 12–15 years with proper care.
Can Cockapoos outgrow their expected size?
Yes, Cockapoos can sometimes outgrow their estimated size range, especially if one of the parents is larger than average or if the puppy receives excellent nutrition and care. While breeders provide size estimates based on parent breeds, mixed breeds like Cockapoos can have unpredictable growth patterns due to their genetic diversity.