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Jackapoo growth chart: how big will my Jackapoo get?
A Jackapoo is a Jack Russell Terrier × Poodle. Here's roughly how much a Jackapoo puppy weighs month by month, when it's full grown, and a calculator to estimate your own puppy's adult weight.
Estimate your puppy's adult weight
Enter your puppy's weight and age (8–52 weeks).
An estimate from typical growth curves — not a guarantee. Your vet's growth checks beat any calculator.
Mini Jackapoo weight by age
Shaded band: typical F1 Mini Jackapoo range (9–22 lb as an adult).
Toy Jackapoo growth chart (Toy Poodle parent)
| Age | % of adult weight | Weight (lb) | Weight (kg) |
|---|---|---|---|
| 2 months | 16% | 1–2 lb | 0.5–1 kg |
| 3 months | 38% | 3–5 lb | 1.1–2.3 kg |
| 4 months | 61% | 4–8 lb | 1.8–3.6 kg |
| 5 months | 77% | 5–10 lb | 2.3–4.6 kg |
| 6 months | 87% | 6–12 lb | 2.6–5.2 kg |
| 8 months | 96% | 6–13 lb | 2.9–5.8 kg |
| 10 months | 99% | 7–13 lb | 3–5.9 kg |
Full grown at about 9–11 months. Adult F1 range 7–13 lb. F1 vs F1B vs F2 sizes →
Mini Jackapoo growth chart (Miniature Poodle parent)
| Age | % of adult weight | Weight (lb) | Weight (kg) |
|---|---|---|---|
| 2 months | 16% | 1–3 lb | 0.6–1.6 kg |
| 3 months | 38% | 3–8 lb | 1.5–3.8 kg |
| 4 months | 61% | 5–13 lb | 2.4–6.1 kg |
| 5 months | 77% | 7–17 lb | 3.1–7.7 kg |
| 6 months | 87% | 8–19 lb | 3.5–8.7 kg |
| 8 months | 96% | 8–21 lb | 3.9–9.6 kg |
| 10 months | 99% | 9–22 lb | 4–9.9 kg |
Full grown at about 9–11 months. Adult F1 range 9–22 lb. F1 vs F1B vs F2 sizes →
Jackapoo growth FAQ
When is a Toy Jackapoo full grown?
Most Toy Jackapoos reach their adult weight at around 9–11 months, though many keep filling out a little after that. A typical F1 Toy Jackapoo ends up about 7–13 lb (3–6 kg).
When is a Mini Jackapoo full grown?
Most Mini Jackapoos reach their adult weight at around 9–11 months, though many keep filling out a little after that. A typical F1 Mini Jackapoo ends up about 9–22 lb (4–10 kg).
How big is a Toy Jackapoo at 6 months?
At 6 months a Toy Jackapoo is usually around 87% of its adult weight, which works out to roughly 6–12 lb. Every puppy is different, so treat this as a guide, not a target.
How big is a Mini Jackapoo at 6 months?
At 6 months a Mini Jackapoo is usually around 87% of its adult weight, which works out to roughly 8–19 lb. Every puppy is different, so treat this as a guide, not a target.
How can I tell how big my Jackapoo puppy will get?
Start with both parents' adult weights, which matter more than the "mini" or "standard" label. Then track your puppy's weight against the chart above, or use the calculator on this page with its current weight and age.
How this is estimated
Adult ranges come from our parent-breed size model (F1 generation). The month-by-month curve uses typical puppy growth timings: smaller dogs finish growing sooner, larger dogs later (Hawthorne et al., 2004, Journal of Nutrition; Salt et al., 2017, PLOS ONE). It's an estimate. Individual puppies vary, so ask your vet if growth seems off.