How to use it
- Choose units and enter the puppy’s current weight.
- Enter its age in weeks (a month is about 4.3 weeks).
- Read the estimate and the range.
How it works
Estimated adult weight = current weight ÷ age in weeks × 52. The low and high values are 80% and 120% of that. This is a crude rule of thumb, not a breed-specific growth model.
Worked example
A puppy of 8 kg at 16 weeks: 8 ÷ 16 × 52 = 26 kg, with a range of 20.8–31.2 kg.
Tips
- Weigh at the same time of day, before a meal, and repeat every week or two.
- Use the estimate for planning (crate size, food), not for deciding how much to feed. For portions see the pet food portion calculator.