Maltipoo Full Grown Size: The Complete Guide 

If you have a Maltipoo puppy and you’re watching them grow, there’s one question that comes up constantly: how big are they actually going to get?

It’s a fair question — and an important one. A dog that tops out at 5 pounds needs different care, different handling, and different living arrangements than one that reaches 20 pounds. Both are full-grown Maltipoos. Both are healthy. But they’re very different dogs in practical terms.

This guide gives you everything: what a full grown Maltipoo looks like at every size, a real month-by-month growth chart, how to predict your specific puppy’s adult size using two proven methods, what actually determines how big a Maltipoo gets, and what healthy weight looks like versus what’s too light or too heavy.

All of it in plain language, backed by real data.

The Quick Answer: How Big Does a Full Grown Maltipoo Get?

A full grown Maltipoo typically stands 8 to 14 inches tall at the shoulder and weighs anywhere from 5 to 20 pounds. The wide range comes down to one main variable: which type of Poodle parent was used in the breeding.

Based on a comprehensive study of nearly 2,000 adult Maltipoos, the majority fall between 7 and 13 pounds — with 8 to 12 inches being the most common height range. That’s your baseline for what “typical” looks like.

Here’s the full size breakdown by type:

Now let’s go deeper on each one.

Teacup Maltipoo Full Grown Size

The Teacup Maltipoo is the smallest of the three main size types. A full grown Teacup Maltipoo weighs under 5 pounds — usually between 2 and 4 pounds — and stands under 8 inches tall at the shoulder.

These are genuinely tiny dogs. A 3-pound fully grown Maltipoo is roughly the size of a large orange. They fit on your lap without taking up space, they travel effortlessly, and they adapt to the smallest apartments on the planet.

They also reach their full adult size faster than larger Maltipoos — most Teacup Maltipoos are essentially full grown by 6 to 8 months old.

Who Is the Teacup Maltipoo For?

Teacup Maltipoos are best suited to:

• Adults-only or older-children households (no rough play from toddlers — these dogs are fragile at this size)
• Apartment dwellers who want the smallest possible companion
• People who travel frequently and want a dog that fits in a cabin-approved carrier
• Calm, attentive owners who understand the specific care needs of a very small dog

The honest trade-off: the smaller the dog, the more concentrated the health risks. Teacup Maltipoos are more susceptible to hypoglycemia, bone fractures from falls, and dental crowding than their larger counterparts. This doesn’t make them unhealthy — it makes them dogs that require more attentive care. More on this in the health section below.

Toy Maltipoo Full Grown Size

The Toy Maltipoo is the most popular size — and probably the one most people picture when they think “Maltipoo.”

A full grown Toy Maltipoo weighs between 5 and 10 pounds and stands 8 to 10 inches tall at the shoulder. When these two breeds are combined, you can expect a full-grown Toy Maltipoo adult to weigh between 5 and 10 pounds and stand about 8 to 10 inches tall. Their petite size makes them ideal for apartment living, single owners, or anyone looking for a close, manageable companion.

Most Toy Maltipoos reach their full adult size somewhere between 9 and 11 months old.

The Toy Maltipoo Sweet Spot

At 5–10 pounds, the Toy Maltipoo sits in what many owners describe as the “sweet spot” of small dog ownership:

• Small enough to be portable, easy to handle, and apartment-friendly
• Sturdy enough to be less fragile than a Teacup
• Light enough that traveling, picking up, and daily life stays simple
• Big enough to be a genuine exercise partner on daily walks

This is also the size that tends to have the most predictable temperament expression — the balance between Maltese gentleness and Poodle intelligence tends to show up most consistently in the Toy size range.

Mini Maltipoo Full Grown Size

The Mini Maltipoo — bred from a Miniature Poodle parent rather than a Toy Poodle — is the largest of the three main types.

A full grown Mini Maltipoo weighs between 10 and 20 pounds and stands 10 to 14 inches tall. Most Mini Maltipoos finish growing around 11 to 13 months old, though some larger individuals continue filling out slightly until 14–15 months.

Why the Mini Maltipoo Has a Devoted Following

The Mini Maltipoo attracts owners who want the Maltipoo’s personality and low-shedding coat in a slightly sturdier, more active package. Specifically:

• More robust for households with young children — less fragile than Toy or Teacup sizes
• Better suited to families who want a dog that can handle moderate hikes, longer walks, or more physical play
• Often slightly calmer in temperament than the Toy size — the larger Miniature Poodle parent can produce a slightly more settled personality
• Still absolutely small-breed territory — 10–20 lbs is firmly in the “small dog” category

Complete Maltipoo Growth Chart: Month by Month

Here’s a detailed growth chart covering all three size types from 8 weeks through full adult size. These numbers represent typical ranges — individual puppies vary.

Toy Maltipoo Growth Chart

Mini Maltipoo Growth Chart

What These Numbers Tell You

Growth is never perfectly linear. Maltipoos tend to grow rapidly in the first six months, reaching around 75% of their full size by the six-month mark. After that, growth slows significantly. The last 25% of adult size develops more gradually over the remaining months.

Most Maltipoos reach close to their final height by around 9 months. Final weight follows slightly later — usually by 12 to 14 months. If your puppy seems to have stopped getting taller but is still gaining weight, that’s normal — they’re filling out, not growing upward.

How to Predict Your Maltipoo’s Adult Size

You don’t have to guess. These are the three methods that actually work:

Method 1: The 8-Week Double

The simplest method. Take your puppy’s weight at exactly 8 weeks old and double it. That gives you a rough estimate of their adult weight.

Example: A Maltipoo puppy weighing 2.5 lbs at 8 weeks would be expected to reach approximately 5 lbs as an adult.

This method works best for Toy Maltipoos. For Mini Maltipoos, the formula tends to slightly underestimate adult weight.

Method 2: The 18-Week Formula

A general rule of thumb is to take their weight at 18 weeks and double it. This method is considered slightly more accurate than the 8-week formula because the puppy has developed further and the growth trajectory is more established.

Example: A Maltipoo puppy weighing 4 lbs at 18 weeks would be estimated to reach approximately 8 lbs as an adult.

Method 3: Parent Weight Estimation

This is the most reliable method of all — and the one that requires asking your breeder the right question.

A Maltipoo’s adult size will generally fall somewhere between the weights of its two parents. The purebred Maltese parent typically weighs between 3.5 and 7 lbs. The Toy Poodle parent typically weighs 4 to 6 lbs. The Miniature Poodle parent typically weighs 10 to 20 lbs.

If you know both parent weights, you have a genuine size range to work with — not a guess based on how small the puppy looks today.

Important: No breeder can guarantee a specific adult weight. Growth is biological and individual, not a controlled manufacturing process. What a responsible breeder can do is give you a realistic weight range based on documented parent sizes. If any seller guarantees an exact adult weight, treat that claim skeptically.

At Puppy Heaven, parent weight information is provided for every puppy — because we believe you deserve realistic expectations before you commit. Browse available Maltipoo puppies →

When Is a Maltipoo Fully Grown?

This question has a slightly different answer depending on what “fully grown” means to you:

Height: Most Maltipoos reach their full height around 9 to 10 months old. After this point, they don’t get noticeably taller.

Weight: Final adult weight is typically reached between 12 and 14 months old for Toy Maltipoos, and up to 13 to 15 months for Mini Maltipoos.

Body condition: Some Maltipoos — particularly larger individuals — continue to fill out slightly in muscle and chest development until 15–18 months. They’ve reached adult height and approximate adult weight, but their body fills into its final mature shape a bit later.

For most practical purposes: Think of your Maltipoo as fully grown by their first birthday. Any changes after that are subtle filling-out, not active growth.

6 Factors That Determine How Big Your Maltipoo Gets

Understanding what actually drives adult size helps you set realistic expectations — and helps you ask the right questions when choosing a puppy.

1. The Poodle Parent — The Biggest Variable

This is the single most important factor. The Maltese parent is relatively consistent in size: a purebred Maltese weighs 3.5 to 7 lbs. The Poodle parent, however, can vary significantly between a Toy Poodle (4–6 lbs) and a Miniature Poodle (10–20 lbs).

A Maltipoo bred from a Toy Poodle parent will reliably be smaller than one bred from a Miniature Poodle parent. This is why knowing which type of Poodle was used in the breeding is the most important question to ask any breeder.

2. Genetics and Generation (F1, F1B, F2)

The generation of your Maltipoo affects more than just coat type — it influences size predictability too.

F1 Maltipoo: A first-generation cross — one purebred Maltese and one purebred Poodle. Genetically 50% each. F1 Maltipoos benefit from the strongest hybrid vigor and tend to fall in the mid-range of size expectations. Size is somewhat variable between litter mates.

F1B Maltipoo: An F1 Maltipoo bred back to a purebred Poodle — making the puppy approximately 75% Poodle and 25% Maltese. F1b Maltipoos are often slightly smaller than F1 Maltipoos and tend to be more consistently sized within a litter. They also typically have curlier, more hypoallergenic coats. This is a good option for households where consistent small size and low shedding are both priorities.

F1BB Maltipoo: A further backcross — approximately 87.5% Poodle. These tend to be the most consistently small and lowest-shedding of all Maltipoo generations, though they require the most grooming.

F2 Maltipoo: Two F1 Maltipoos bred together. Genetically similar to F1 on average, but with wider variation in coat and size — because when two hybrids breed, genes recombine less predictably. Size can vary more within F2 litters than F1 litters.

Multigen Maltipoo: Breeding Maltipoos together for multiple generations. This can lead to more consistent size over time, but it’s still not a precise guarantee.

The honest summary: generation matters more for coat type than for size, but F1B lines that backcross to a Toy Poodle do tend to produce reliably smaller adults than F1 Toy Poodle crosses.

3. Gender

Male Maltipoos tend to be slightly larger than females — but the difference is genuinely small. We’re talking 1 to 3 pounds and roughly 1 to 2 inches in height at most.

For Toy Maltipoos: males typically range toward the upper end (7–10 lbs), females toward the lower end (5–8 lbs).

For Mini Maltipoos: males can reach 15–20 lbs, females typically top out at 13–17 lbs.

This gender difference shouldn’t be a primary factor in your size selection. The parent breeds and generation will have far more impact on final size than gender alone.

4. Nutrition and Feeding Quality

A Maltipoo puppy fed a high-quality, nutritionally complete small-breed puppy food will grow at its natural, healthy rate. Poor nutrition — either insufficient calories, wrong nutrient balance, or low-quality ingredients — can slow growth and produce an underweight adult.

Overfeeding is the more common problem in practice. Small dogs are easy to overfeed because their portions look so tiny that owners assume a little extra is fine. But even a pound of extra weight on a 6-lb dog is proportionally equivalent to 20+ lbs of extra weight on a human. It puts real stress on joints, heart, and organs.

Critical point: You cannot make a Maltipoo smaller by restricting food. Their adult size is genetically set. Restricting food produces an underweight, unhealthy dog — not a smaller one. Feed to body condition, not to a target number.

5. Health During Growth

Illness, parasites, and untreated medical conditions during the growth phase can affect final adult size. A puppy who spends significant time fighting a parasite load, a chronic infection, or an unaddressed health condition won’t develop at the rate healthy genetics allow.

Regular veterinary checkups during puppyhood — typically at 8 weeks, 12 weeks, and 16 weeks — catch these issues before they impact development. This is one of the clearest reasons why buying from a source that provides a vet health examination before placement matters.

6. Spay and Neuter Timing

This is a factor most size guides skip, but it’s worth knowing. Dogs that are spayed or neutered before sexual maturity (before sex hormones peak) grow slightly taller and longer than those spayed or neutered later. The sex hormones that prompt growth plates to close arrive later, so growth continues longer.

The practical difference in a small breed like the Maltipoo is minor — we’re talking fractions of an inch in most cases. But if you’re specifically trying to minimize adult size, your vet may recommend waiting until after the puppy has finished its primary growth phase before spaying or neutering. Discuss timing with your veterinarian based on your specific puppy’s situation.

Male vs Female Maltipoo Size: A Detailed Comparison

The gender difference is real but modest. For most families, personality, coat type, and the specific puppy’s energy level will matter far more to daily life than whether they end up 1–2 lbs heavier or lighter based on sex.

What Does a Full Grown Maltipoo Look Like?

Beyond the numbers, here’s what a fully grown Maltipoo actually looks like in terms of appearance and build:

Face: Round, expressive eyes, soft floppy ears, and a button nose. The classic “teddy bear face” that makes them look like a puppy well into adulthood. This is one of the most distinctive things about Maltipoos — their face doesn’t age the way many dogs’ faces do. A 7-year-old Maltipoo can still look like a puppy to most people.

Build: Compact and proportional. Not blocky or heavy-boned. Maltipoos carry themselves with a light, agile quality regardless of whether they’re a 5-lb Toy or a 15-lb Mini.

Coat at full growth: The adult coat differs from the puppy coat. Many Maltipoos go through a coat transition between 6 and 12 months where the softer puppy coat sheds out and the adult coat — curlier, denser, or wavier depending on generation — grows in. This is normal and expected.

Coat types at full growth:

• Curly: More Poodle-dominant, lowest shedding, most hypoallergenic, requires most grooming
• Wavy: The most common — a blend of both parent breeds, low shedding, easier maintenance than curly
• Silky/Straight: More Maltese-dominant, slightly higher shedding than wavy or curly

Colors: White, cream, apricot, red, chocolate, silver, black, and parti-color combinations. The Poodle parent side introduces most of the color variety.

How to Tell if Your Full Grown Maltipoo Is a Healthy Weight

Weight matters — but the number on the scale is less useful than what the dog actually looks like and feels like. Here’s how to assess healthy weight in a full grown Maltipoo:

The Rib Test

Run your fingers along your Maltipoo’s ribcage with gentle pressure. You should be able to feel each rib distinctly without pressing hard — but you shouldn’t be able to see the ribs just by looking. If you can’t feel ribs at all without significant pressure, your dog is overweight. If ribs are visible without touching, they’re underweight.

The Waist Check

Look at your Maltipoo from directly above. There should be a visible narrowing — a waist tuck — behind the ribcage. If the body is the same width from shoulder to hip with no taper, the dog is likely carrying excess weight.

The Tuck-Up

Look at your Maltipoo from the side. The belly should tuck upward behind the ribcage — not hang level or droop downward. A belly that’s level with or lower than the lowest point of the chest suggests the dog is overweight.

A healthy weight range by size:

Signs Your Maltipoo May Be Underweight

• Visible spine or hip bones when looking from above
• Ribs clearly visible without touching
• Dull, thin coat
• Low energy or reluctance to play
• Slower-than-expected growth compared to the growth chart above

If you notice these signs, a veterinary checkup is the right next step. Underweight can result from parasites, insufficient feeding, poor-quality food, or an underlying health condition.

Signs Your Maltipoo May Be Overweight

• Can’t feel ribs without pressing firmly
• No visible waist from above
• Belly not tucking up from the side
• Tires easily during play or short walks
• Reluctance to climb stairs or jump

Excess weight in small dogs creates real health consequences over time — joint stress, heart strain, reduced lifespan. If your Maltipoo is consistently above the upper end of their healthy weight range, a conversation with your vet about diet adjustment is worthwhile.

Maltipoo Size and Lifestyle: Choosing the Right Fit

Size affects more than just weight and height. It shapes how well the dog fits your actual daily life. Here’s a practical framework:

All three sizes share the same core Maltipoo personality: affectionate, low-shedding, people-bonded, intelligent, and adaptable. You’re choosing a size that fits your home and lifestyle — not a different temperament.

FAQs

“My puppy is 4 months old and seems small — is something wrong?”

Probably not. Maltipoo growth follows a curve, not a straight line. Some puppies grow in bursts — you barely notice anything for a few weeks, then suddenly they’re visibly bigger. As long as your puppy is eating well, active, and progressing — even slowly — there’s usually nothing to worry about. A quick vet visit is always a good idea if you’re genuinely concerned.

“My breeder said the puppy will be 4 lbs. Should I believe that?”

Treat any specific weight promise with healthy skepticism. A reliable estimate based on parent weights is reasonable. An exact guarantee is not — growth is biological and individual, and any breeder claiming certainty about a specific adult weight is overpromising. Ask for parent weights instead, and calculate your own realistic range.

“My Maltipoo is 14 months and still gaining weight. Is that normal?”

Small weight fluctuations after 14 months are usually diet-related rather than growth-related. If your dog is gaining weight after 14 months, review portion sizes and treat frequency. If they’re losing weight unexpectedly, a vet checkup is warranted.

“How do I know if my Maltipoo is done growing?”

Height plateaus first — around 9–10 months for most Maltipoos. If you haven’t noticed any height change in 6–8 weeks, they’re likely at full height. Weight stabilizes a few months after height. By 14 months, the vast majority of Maltipoos are at their permanent adult size and weight.

“Can two Toy Maltipoo parents produce a Mini-sized puppy?”

Genetically, it’s unlikely but not impossible. Recessive genes from further back in the bloodline can occasionally express in ways that don’t fit the expected range. This is rare — but it’s a reminder that all size estimates are predictions, not certainties.

Maltipoo Full Grown Size and Health: What to Know

Size affects health vulnerability in specific ways for Maltipoos. Here’s what full-grown owners should be aware of:

Small dogs and dental disease: All sizes of full-grown Maltipoos are susceptible to dental crowding and gum disease — it’s the number one health issue in small breeds. Daily tooth brushing from puppyhood is the single most impactful preventive habit you can build.

Luxating patella: A dislocating kneecap common in small dogs. Maintaining a healthy weight reduces joint stress and lowers the likelihood of this progressing to the point where surgery is needed.

Hypoglycemia: More of a risk in Teacup and very small Toy Maltipoos, particularly during puppyhood. Regular feeding schedules and small, frequent meals are the primary prevention.

Joint health as they age: Full grown Maltipoos — especially Mini sizes — benefit from ramps and steps for furniture access rather than jumping up and down. Even though they’re small, repetitive high-impact jumping on hard floors over years can contribute to joint wear.

Weight management: Maintaining your Maltipoo at a healthy weight throughout their life is one of the most meaningful things you can do for their long-term health. The difference between a Maltipoo that’s 2–3 lbs overweight and one at optimal weight, over a 12–15 year lifespan, is significant in terms of joint health, heart health, and energy.

Finding a Maltipoo Whose Size You Can Trust

The most important size-related decision you make as a Maltipoo buyer isn’t which size you want — it’s choosing a source that gives you honest, documented information about what size to actually expect.

That means:

• A source that knows the exact weights of both parent dogs and can show you documentation
• A source that’s upfront about the difference between an estimate and a guarantee
• A source where you can meet or video-call the puppy before committing
• A source with a health guarantee and vet examination before placement

Puppy Heaven provides parent weight information for every Maltipoo puppy we place. Our team in Las Vegas and South Florida has been matching families with the right Maltipoo for over 21 years — and part of doing that well means setting honest expectations about adult size from day one.

If allergies are a concern in your household, our Maltipoo puppies include F1B options with curly, low-shedding coats. If you’re comparing the Maltipoo to other small breeds, you might also want to look at our Cavapoo puppies — a slightly larger, equally low-shedding designer breed that many families love — or our Morkie puppies, a Maltese-Yorkie cross that stays on the smaller end of the Toy range.

Frequently Asked Questions

How big does a full grown Maltipoo get?

A full grown Maltipoo typically weighs between 5 and 20 pounds and stands 8 to 14 inches tall at the shoulder. The most common size based on a study of nearly 2,000 adult Maltipoos is 7 to 13 pounds and 8 to 12 inches tall. Size depends primarily on whether the Poodle parent was a Toy or Miniature Poodle.

When is a Maltipoo fully grown?

Most Maltipoos reach full height by 9 to 10 months. Adult weight is typically reached by 12 to 14 months for Toy sizes and 13 to 15 months for Mini sizes. For practical purposes, think of your Maltipoo as fully grown by their first birthday.

How do I predict my Maltipoo’s adult size?

The three best methods are: double their weight at 8 weeks; double their weight at 18 weeks (slightly more accurate); or ask for documented parent weights and expect your adult dog to fall somewhere between the two parents’ sizes.

Does the generation (F1, F1B, F2) affect Maltipoo size?

Yes, to a degree. F1B Maltipoos backcrossed to a Toy Poodle tend to be slightly smaller and more consistent in size than F1 Maltipoos. F2 Maltipoos can vary more widely in size than F1s because gene recombination in two hybrids is less predictable.

Is a male or female Maltipoo bigger?

Males tend to be slightly larger — typically 1 to 3 pounds heavier and 1 to 2 inches taller than females of the same type. The difference is modest and should not be the primary factor in your decision.

Can I keep my Maltipoo small by feeding them less?

No. A Maltipoo’s adult size is genetically predetermined. Restricting food does not produce a smaller adult dog — it produces an underweight, malnourished one. Feed to support healthy growth, not to chase a smaller number.

What is the average weight of a full grown Maltipoo?

Based on data from nearly 2,000 adult Maltipoos, the most common adult weight is between 7 and 13 pounds, with an average around 8 to 12 pounds. Toy Maltipoos cluster toward the lower end of that range; Mini Maltipoos toward the higher end.

How do I know if my full grown Maltipoo is a healthy weight?

You should be able to feel their ribs without pressing hard but not see them visually. Looking from above, there should be a visible waist tuck behind the ribcage. Looking from the side, the belly should tuck upward. If you’re unsure, your veterinarian can assess body condition score at any routine checkup.

How big is a Teacup Maltipoo full grown?

A full grown Teacup Maltipoo typically weighs under 5 pounds — most commonly between 2 and 4 pounds — and stands under 8 inches tall at the shoulder. They’re fully grown by 6 to 8 months old.

How big is a Mini Maltipoo full grown?

A full grown Mini Maltipoo typically weighs between 10 and 20 pounds and stands 10 to 14 inches tall at the shoulder. They’re fully grown by 11 to 13 months, with some larger individuals filling out until 14 to 15 months.

Conclusion

A full grown Maltipoo can be anywhere from a delicate 3-pound Teacup to a sturdy 18-pound Mini — and every size in between is a healthy, normal, wonderful Maltipoo. The size you end up with depends mostly on the Poodle parent used in the breeding, the generation, and the individual genetics of your specific puppy.

What you can control: asking the right questions before you buy, getting documented parent weight information, choosing a source that’s honest about expectations, and managing your dog’s nutrition and health throughout their life.

What you can’t control: the exact number on the scale when they’re fully grown. But if you’ve done the research right, you’ll land in the right ballpark — and the specific number will matter a lot less once they’re actually home.

If you’re ready to find your Maltipoo, Puppy Heaven is a good place to start — with parent weight information available, honest size expectations, and 21+ years of matching families with the right dog.

Browse Available Maltipoo Puppies →