Yorkie Growth Chart: How Big Will Your Puppy Get?
A week-by-week weight chart, the formula breeders actually use to project adult size, and why the number on the chart is a guide rather than a promise.
The most common question we get is “how big will she get?” The honest answer is a range, not a number — but the range is narrow enough to be useful, and here is how to work it out.
The Yorkie growth chart formula breeders use
Every Yorkie growth chart rests on the same simple projection.
Projected adult weight
Weight at 12 weeks (in ounces) × 2, then add half of that same 12-week weight.
Example: a puppy weighing 30 oz at 12 weeks. 30 × 2 = 60, plus 15 = 75 oz, or about 4.7 lb as an adult.
Expect the real figure to land within roughly half a pound either side. Yorkies do most of their growing between 8 and 20 weeks and are usually finished by 10–12 months.
Yorkie growth chart, week by week
Use this Yorkie growth chart alongside your puppy’s actual weights, not instead of them.
Weights in pounds. Find your puppy’s current age and weight, then read down the column to see the likely adult size.
| Age | Small line | Mid range | Larger line |
|---|---|---|---|
| Birth | 0.2 lb | 0.3 lb | 0.4 lb |
| 4 weeks | 0.7 lb | 1.0 lb | 1.3 lb |
| 8 weeks | 1.1 lb | 1.6 lb | 2.1 lb |
| 10 weeks | 1.4 lb | 2.0 lb | 2.6 lb |
| 12 weeks | 1.8 lb | 2.5 lb | 3.2 lb |
| 16 weeks | 2.3 lb | 3.2 lb | 4.1 lb |
| 20 weeks | 2.7 lb | 3.8 lb | 4.9 lb |
| 6 months | 3.0 lb | 4.2 lb | 5.5 lb |
| 9 months | 3.3 lb | 4.7 lb | 6.2 lb |
| 12 months (adult) | 3.5 lb | 5.0 lb | 6.8 lb |
Weigh your puppy on a kitchen scale at the same time of day, once a week. What matters is not the individual number but whether the curve is climbing steadily. A puppy that stops gaining for more than a few days needs a vet, regardless of which column it sits in.
What a Yorkie growth chart cannot tell you
A Yorkie growth chart projects a range, never a guarantee.
| Factor | How much it matters |
|---|---|
| Parents’ sizes | The strongest single predictor. Always ask what both parents weigh. |
| Grandparents’ sizes | Meaningful. Size can skip a generation. |
| Position in the litter | Runts often stay smaller, though many catch up substantially by six months. |
| Sex | Males average slightly larger, but the overlap is enormous. Not a reliable predictor. |
| Nutrition | Poor nutrition can stunt growth. Good nutrition cannot exceed the genetic ceiling. |
People do this and it is dangerous. Underfeeding a growing toy-breed puppy causes hypoglycaemia and can permanently damage bone and organ development. A Yorkie will reach the size its genetics dictate. Your job is to feed it properly on the way there.
Questions about the Yorkie growth chart
At what age is a Yorkie fully grown?
Most reach adult weight between 10 and 12 months. Coat continues developing until around two to three years, and adult colour often does not settle until then either. The AKC breed standard for the Yorkshire Terrier puts an adult at no more than seven pounds, which is the figure any projection should be measured against.
My puppy is bigger than the chart. Is that a problem?
Not in itself. Some Yorkie lines run to 8 or 9 lb. A slightly larger Yorkie is typically a sturdier, easier dog to live with. What matters is body condition, not the number.
Can you guarantee my puppy’s adult weight?
No, and neither can anyone else. We give you both parents’ weights and a projected range from the current growth curve. Any breeder guaranteeing an exact adult weight is guessing.
How often should I weigh my puppy?
Once a week until six months, then monthly. Same scale, same time of day, before a meal.
Every puppy listed with real weights
Current weight, date measured, and a projected adult range based on both parents. Ask us for the parents’ weights on any puppy. Diko is a good example — his page lists his real current weight and both parents’ weights rather than a promised adult size.