Puppy Growth Charts from Veterinary Records
These tables translate the median and 10th–90th percentile growth fractions observed in our training data into example weight paths. Each row includes the number of eligible training dogs behind that age point.
Read the chart in the right direction
The calculator estimates adult weight from a puppy's measurement. These tables do the reverse: they start with an example adult weight and multiply it by the data-derived growth fractions. The percentile columns describe variation in the analyzed records; they are not clinical centile charts or a diagnosis.
Why size groups have different timelines
Dogs do not all mature on the same schedule. Salt and colleagues found meaningful differences among adult-size groups in millions of veterinary records, making one rule—such as doubling every dog's 16-week weight—too simplistic.
We derived separate curves for toy, small, medium, large, very-large, and giant dogs from the study's open supporting dataset. The exact filters, split, sample sizes, and holdout results are documented in the methodology and validation report.
Toy example: 10 lb adult weight
If the adult dog eventually weighs 10 lb, this table shows the median path and the wider observed-fraction path for the toy group. A real dog's measurements may be above, below, or cross these values over time.
| Age | Median path | Observed 10th–90th percentile path | Training dogs |
|---|---|---|---|
| 8 Weeks | ~ 3 lbs | 2–4 lbs | 33,439 |
| 12 Weeks | ~ 4 lbs | 3–5 lbs | 62,231 |
| 16 Weeks | ~ 5 lbs | 4–7 lbs | 72,067 |
| 24 Weeks | ~ 7 lbs | 5–9 lbs | 49,694 |
| 36 Weeks | ~ 8 lbs | 7–10 lbs | 22,320 |
| 52 Weeks (1 Year) | ~ 9 lbs | 7–10 lbs | 21,730 |
| 76 Weeks (1 Year+) | ~ 10 lbs | 8–11 lbs | 27,546 |
Small example: 17 lb adult weight
If the adult dog eventually weighs 17 lb, this table shows the median path and the wider observed-fraction path for the small group. A real dog's measurements may be above, below, or cross these values over time.
| Age | Median path | Observed 10th–90th percentile path | Training dogs |
|---|---|---|---|
| 8 Weeks | ~ 4 lbs | 3–6 lbs | 7,259 |
| 12 Weeks | ~ 6 lbs | 4–8 lbs | 13,503 |
| 16 Weeks | ~ 8 lbs | 6–11 lbs | 15,495 |
| 24 Weeks | ~ 12 lbs | 10–14 lbs | 9,846 |
| 36 Weeks | ~ 15 lbs | 12–17 lbs | 4,472 |
| 52 Weeks (1 Year) | ~ 16 lbs | 13–18 lbs | 4,363 |
| 76 Weeks (1 Year+) | ~ 16 lbs | 15–18 lbs | 5,506 |
Medium example: 27 lb adult weight
If the adult dog eventually weighs 27 lb, this table shows the median path and the wider observed-fraction path for the medium group. A real dog's measurements may be above, below, or cross these values over time.
| Age | Median path | Observed 10th–90th percentile path | Training dogs |
|---|---|---|---|
| 8 Weeks | ~ 6 lbs | 4–8 lbs | 8,968 |
| 12 Weeks | ~ 9 lbs | 6–12 lbs | 15,507 |
| 16 Weeks | ~ 12 lbs | 9–15 lbs | 17,425 |
| 24 Weeks | ~ 18 lbs | 14–22 lbs | 10,469 |
| 36 Weeks | ~ 22 lbs | 19–26 lbs | 5,108 |
| 52 Weeks (1 Year) | ~ 24 lbs | 20–28 lbs | 5,375 |
| 76 Weeks (1 Year+) | ~ 26 lbs | 23–29 lbs | 6,074 |
Large example: 50 lb adult weight
If the adult dog eventually weighs 50 lb, this table shows the median path and the wider observed-fraction path for the large group. A real dog's measurements may be above, below, or cross these values over time.
| Age | Median path | Observed 10th–90th percentile path | Training dogs |
|---|---|---|---|
| 8 Weeks | ~ 9 lbs | 5–13 lbs | 13,932 |
| 12 Weeks | ~ 14 lbs | 10–19 lbs | 21,870 |
| 16 Weeks | ~ 21 lbs | 16–26 lbs | 24,084 |
| 24 Weeks | ~ 32 lbs | 26–39 lbs | 13,594 |
| 36 Weeks | ~ 42 lbs | 36–48 lbs | 7,312 |
| 52 Weeks (1 Year) | ~ 46 lbs | 41–52 lbs | 6,864 |
| 76 Weeks (1 Year+) | ~ 49 lbs | 44–53 lbs | 7,483 |
Very large example: 77 lb adult weight
If the adult dog eventually weighs 77 lb, this table shows the median path and the wider observed-fraction path for the very large group. A real dog's measurements may be above, below, or cross these values over time.
| Age | Median path | Observed 10th–90th percentile path | Training dogs |
|---|---|---|---|
| 8 Weeks | ~ 13 lbs | 8–18 lbs | 15,425 |
| 12 Weeks | ~ 21 lbs | 15–28 lbs | 24,842 |
| 16 Weeks | ~ 31 lbs | 23–39 lbs | 27,101 |
| 24 Weeks | ~ 48 lbs | 39–58 lbs | 13,953 |
| 36 Weeks | ~ 64 lbs | 54–74 lbs | 7,081 |
| 52 Weeks (1 Year) | ~ 71 lbs | 62–80 lbs | 6,747 |
| 76 Weeks (1 Year+) | ~ 75 lbs | 68–81 lbs | 7,514 |
Giant example: 120 lb adult weight
If the adult dog eventually weighs 120 lb, this table shows the median path and the wider observed-fraction path for the giant group. A real dog's measurements may be above, below, or cross these values over time.
| Age | Median path | Observed 10th–90th percentile path | Training dogs |
|---|---|---|---|
| 8 Weeks | ~ 16 lbs | 10–24 lbs | 3,678 |
| 12 Weeks | ~ 28 lbs | 20–38 lbs | 5,791 |
| 16 Weeks | ~ 42 lbs | 32–54 lbs | 6,444 |
| 24 Weeks | ~ 70 lbs | 56–84 lbs | 3,506 |
| 36 Weeks | ~ 98 lbs | 83–111 lbs | 1,812 |
| 52 Weeks (1 Year) | ~ 110 lbs | 97–121 lbs | 1,647 |
| 76 Weeks (1 Year+) | ~ 116 lbs | 106–125 lbs | 1,793 |
How to use repeated measurements
Use the same scale under similar conditions and record the date, age, unit, and any relevant context. Compare the longer-term direction rather than expecting a perfectly smooth weekly line. Our guide to weighing and tracking a puppy consistently provides a practical process.
Unexpected weight loss, failure to gain, a major body-condition change, poor appetite, persistent digestive signs, or lethargy calls for a licensed veterinarian. A model chart cannot determine the cause.
Download the derived curve table as CSV or inspect the full JSON with validation metrics. The derived tables are published under CC BY 4.0 with attribution details in the data README.