Full grown Maltipoo: size, weight and growth guide

A full grown Maltipoo typically weighs between 5 and 20 pounds and stands 8 to 14 inches tall at the shoulder. That is a wide range, and it exists for a real reason: the size of the Poodle parent makes an enormous difference. A Maltipoo from a toy Poodle stays much smaller than one from a miniature Poodle, and there is natural variation even within those lines.

Here is what to expect, how to predict your puppy's adult size, and the honest truth about very small “teacup” Maltipoos.

Maltipoo size at a glance

Height is measured at the withers, the highest point of the shoulders, which is the standard measurement for all dogs.

How big does a full grown Maltipoo get?

Most Maltipoos land somewhere between 8 and 12 pounds as adults, though the full range runs from under 5 to around 20 pounds depending on the breeding. The height range is 8 to 14 inches at the shoulder.

The short version: if your Maltipoo came from a toy Poodle parent, expect a smaller dog, typically under 10 pounds. If the Poodle parent was a miniature, expect something closer to 10 to 20 pounds. Many breeders do not specify which size Poodle they used, so if final size matters to you, ask before you buy.

What determines a Maltipoo's adult size?

The Poodle parent is the single biggest factor.

A toy Poodle stands under 10 inches and typically weighs 4 to 6 pounds. A miniature Poodle stands 10 to 15 inches and weighs 10 to 15 pounds. The Maltese, by comparison, is consistently small, usually under 7 pounds. Because the Maltese side stays compact regardless, the Poodle parent is what separates a 6 pound Maltipoo from a 15 pound one.

Other factors play a smaller role:

Genetics within the litter. Even two puppies from the same litter can differ noticeably in adult size. Genetics does not follow a formula.

Generation. An F1B Maltipoo (backcrossed to a Poodle, so roughly 75 percent Poodle) may lean slightly larger or smaller depending on the Poodle used, but generation has a bigger effect on coat type than on final size.

Sex. Male Maltipoos are typically slightly larger than females, by roughly half an inch in height and a pound or two in weight. It is a real difference but a minor one.

Nutrition. Overfeeding a puppy does not make it grow into a larger adult, but poor nutrition can affect healthy development. Feed a quality food made for small breeds and follow portion guidelines.

When does a Maltipoo stop growing?

Smaller Maltipoos finish growing faster than larger ones.

Teacup-sized Maltipoos, those under about 5 pounds, often reach their full size by 6 to 8 months. Toy-sized Maltipoos are usually done by 9 to 12 months. Larger mini Maltipoos can keep growing until 12 to 14 months.

As a general rule, most Maltipoos hit about 75 percent of their adult weight by 6 months. After that, growth slows and fills out rather than shoots up.

How to predict your Maltipoo puppy's adult size

There is no method that is perfectly accurate, but this one gives a reasonable estimate: double your puppy's weight at 8 weeks old. A puppy weighing 3 pounds at 8 weeks will often reach around 6 pounds as an adult. A puppy at 5 pounds at 8 weeks may reach 10 pounds.

Treat it as a guide, not a guarantee. The actual adult size depends on genetics that a simple formula cannot fully account for. For the most accurate picture, ask the breeder about the weight of both parent dogs. The parents' sizes give you a better bracket than any calculator.

If you are tracking a puppy's growth, a quick weigh-in every two weeks and a monthly photo next to a fixed object, like a shoebox or a step, helps you see real progress over time.

Teacup Maltipoos: the honest truth

“Teacup” is a marketing label, not an officially recognized size. There is no breed standard that defines a teacup Maltipoo. The term simply means a very small dog, usually one expected to stay under 5 pounds as an adult.

That extreme small size does come with trade-offs worth understanding before you commit:

• Fragile bones. A very small dog can fracture a leg from a jump that would not trouble a slightly larger dog. Falls from a sofa or a child's arms carry real risk.
• Hypoglycemia (low blood sugar). Tiny dogs have fast metabolisms and small energy reserves. They need frequent small meals, especially as puppies, to avoid dangerous blood sugar drops.
• Dental crowding. The same teeth squeezed into a smaller jaw means even more risk of dental disease than the average Maltipoo.
• Anesthesia risk. Very small dogs carry a higher anesthesia risk for any surgery or dental procedure.

None of this means a teacup Maltipoo cannot be a wonderful companion. Many are. It means going in with clear eyes about the extra attention, handling care, and vet costs that come with extreme small size. If a breeder is charging significantly more for a “teacup” puppy, ask about the health of both parent dogs and whether the extreme size has been deliberately bred for over multiple generations.

For more on health conditions common in Maltipoos of all sizes, see our Maltipoo health guide.

Is my Maltipoo a healthy weight?

The scale matters less than the body condition. A simple check: run your hands along your dog's sides. You should be able to feel the ribs with light finger pressure, but they should not be visibly jutting out. You should see a visible waist when looking down from above.

If you cannot feel the ribs without pressing hard, or if the waist has disappeared, your dog is likely carrying extra weight. If the ribs are prominently visible without touching, the dog may be underweight. Either way, a vet visit and an honest conversation about portion sizes and exercise is the right next step.

Weight management matters more for small breeds than for large ones. Research consistently shows that even moderate excess weight shortens a small dog's life more than it does for larger breeds. For more on that, and the specific numbers behind it, see our Maltipoo lifespan guide.