All Breeds › Great Dane
Predict your Great Dane's adult weight using veterinary growth data
| Male Adult Weight | 140–175 lbs |
| Female Adult Weight | 110–140 lbs |
| Male Height | 30–32 inches |
| Female Height | 28–30 inches |
| Life Expectancy | 7–10 years |
| Size Category | giant |
| AKC Group | Working |
| Full Grown By | ~24 months (104 weeks) |
Enter your puppy's age and current weight for a personalized prediction.
Open CalculatorExpected weight at key ages based on veterinary growth data for giant-sized breeds.
| Age | % Adult Weight | Male Est. | Female Est. |
|---|---|---|---|
| 8 weeks | 12% | ~20 lbs | ~17 lbs |
| 4 months | 35% | ~56 lbs | ~46 lbs |
| 6 months | 59% | ~93 lbs | ~75 lbs |
| 8 months | 82% | ~130 lbs | ~103 lbs |
| 12 months | 94% | ~148 lbs | ~116 lbs |
| 15 months | 99% | ~156 lbs | ~123 lbs |
| 19 months | 100% | ~158 lbs | ~125 lbs |
| Adult | 100% | 140–175 lbs | 110–140 lbs |
Most Great Danes reach their adult weight by around 24 months (104 weeks).
As a giant-sized breed, your Great Dane reaches adult size by 18-24 months. Larger breeds have a longer growth phase. Feeding a giant-breed-specific puppy food during this period supports proper bone and joint development.
Individual dogs may reach full size slightly earlier or later. Spayed or neutered puppies may also have slightly different growth timelines. Regular vet checkups are the best way to track your Great Dane's progress.
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Because Great Danes are a giant-sized breed, look for a large/giant breed puppy formula designed for their growth needs. Controlled minerals with added joint support.
Feed puppy-specific food until your Great Dane reaches adult size (around 24 months), then transition to an adult formula over 7–10 days.
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For a giant-sized breed like the Great Dane, a 48-inch crate (fits dogs up to 90+ lbs) is the right adult size. Buy the adult size from the start and use the included divider panel while your puppy is still growing.