Rottweiler weight predictor
AKC: males 95–135 lb, females 80–100 lb. A slow-maturing large breed — controlled growth to ~2 years protects the joints.
Typical adult: 80–135 lb · grown by ~20 months
Predicted adult weight
Fully grown—
likely —
Enter your puppy’s weight and age.
That doesn’t look right
Your puppy’s growth curve
Estimated weight as they grow up — the dot is where they are now.
| Age | Est. weight |
|---|
Good to know
General guidance only — an estimate, not veterinary advice. Always check with your vet about your pet’s growth, weight and diet.
How this was calculated
For a Rottweiler we use the large-breed growth curve (matures around 20 months): adult weight ≈ current weight ÷ the fraction of adult weight a large breed reaches at this age. Typical adult weight (80–135 lb) is from the AKC breed standard. The gauge shows where your prediction lands against the breed-typical adult range.
Source: AKC breed standard + WALTHAM growth charts. Full method on our methodology page.
Built by the PawGauge team, reviewed against cited veterinary sources. Last reviewed 29 June 2026.
About our figures →Rottweiler growth chart
Typical Rottweiler weight from 8 weeks to fully grown, for males and females. A healthy Rottweiler tracks near these figures — individuals sit up to ~10–15% either side.
| Age | Male | Female |
|---|---|---|
| 8 weeks | 25.4 lb (12 kg) | 19.9 lb (9.0 kg) |
| 3 months | 39.8 lb (18 kg) | 31.1 lb (14 kg) |
| 4 months | 51.5 lb (23 kg) | 40.3 lb (18 kg) |
| 5 months | 61.5 lb (28 kg) | 48.1 lb (22 kg) |
| 6 months | 71.4 lb (32 kg) | 55.9 lb (25 kg) |
| 7 months | 79.4 lb (36 kg) | 62.2 lb (28 kg) |
| 8 months | 87.4 lb (40 kg) | 68.4 lb (31 kg) |
| 9 months | 92.8 lb (42 kg) | 72.6 lb (33 kg) |
| 10 months | 97.2 lb (44 kg) | 76.1 lb (35 kg) |
| 12 months | 105.9 lb (48 kg) | 82.9 lb (38 kg) |
| 14 months | 110.3 lb (50 kg) | 86.3 lb (39 kg) |
| 16 months | 114.8 lb (52 kg) | 89.8 lb (41 kg) |
| 18 months | 115 lb (52 kg) | 90 lb (41 kg) |
| Adult (~20 mo) | 95–135 lb (43–61 kg) | 80–100 lb (36–45 kg) |
Rottweiler growth, explained
Rottweilers are a large breed, so they follow the large-breed growth curve. AKC: males 95–135 lb, females 80–100 lb. A slow-maturing large breed — controlled growth to ~2 years protects the joints. Most reach close to their adult weight by around 20 months, then continue to firm up in muscle and chest for a while after.
To predict an adult weight we divide your puppy’s current weight by the fraction of adult weight a large breed has typically reached at that age. Typical adult weight (80–135 lb) is from the AKC breed standard. The result is an estimate with a likely range — genetics and nutrition move individual dogs up or down. If your Rottweiler looks heavier or lighter than the breed-typical band, your vet is the best person to check.
Rottweiler weight questions
- How big do Rottweilers get?
- A typical adult Rottweiler weighs about 80–135 lb. AKC: males 95–135 lb, females 80–100 lb. A slow-maturing large breed — controlled growth to ~2 years protects the joints.
- What should a Rottweiler weigh by age?
- See the Rottweiler growth chart above for weight at 8 weeks through to adult. As a guide, a large-breed puppy is roughly half its adult weight by about 5 months.
- Do male and female Rottweilers weigh differently?
- Yes — male Rottweilers run about 95–135 lb and females about 80–100 lb, so the growth chart above shows a separate line for each. Individuals overlap.
- When is a Rottweiler fully grown?
- Rottweilers are a large breed and usually finish growing around 20 months, though they may keep filling out a little after that.
- How accurate is this for a Rottweiler?
- Within about 10–15% if your puppy is a typical Rottweiler. Crossbreeds, runts and big-boned individuals vary more. It’s an estimate — your vet can assess your individual dog.
