Short answer: an adult chocolate Lab stands 22½–24½ inches at the shoulder and weighs 65–80 lb if male, or 21½–23½ inches and 55–70 lb if female. Those are the AKC breed-standard figures for a lean dog in working condition. Most Labs reach near-adult height around 12 months and finish filling out by 18–24 months.
| At a glance | Male | Female |
|---|---|---|
| Full-grown weight | 65–80 lb | 55–70 lb |
| Full-grown height | 22½–24½ in | 21½–23½ in |
| Near adult height | ~12 months | ~12 months |
| Fully filled out | 18–24 months | 18–24 months |
Want a projection for your own puppy? Enter its age and current weight in the puppy weight calculator. Already full grown? Check whether that weight is healthy with our Lab weight and body condition guide.
Color doesn’t change size. A chocolate Lab is built to the same breed standard as black and yellow Labs. The numbers below come straight from the AKC standard. Remember they describe dogs in working condition, meaning lean.
Breed-standard size chart
| Male | Female | |
|---|---|---|
| Height at withers | 22½–24½ in | 21½–23½ in |
| Weight (working condition) | 65–80 lb | 55–70 lb |
| Coat | Short, straight, dense, weather-resistant double coat | Same |
| Colors allowed | Black, yellow, chocolate (solid) | Same |
| Eyes (chocolate) | Brown or hazel | Same |
| Eye rims & nose (chocolate) | Brown | Same |
Under the AKC standard, a height more than ½ inch outside these ranges is a disqualification in the show ring. That matters for breeding dogs, not for pets.
Lab weight chart by age
This chart turns the AKC adult range into an estimate for each age. The percentages come from the approximate large-breed growth curve our puppy growth calculator uses. It’s a rule of thumb shaped like published growth-standard charts (Salt et al., 2017), not a measured Labrador standard, so treat it as a guide and judge your puppy by body condition.
| Age | Approx. % of adult weight | Male (estimate) | Female (estimate) |
|---|---|---|---|
| 8 weeks (2 months) | 15% | 10–12 lb | 8–10 lb |
| 12 weeks (3 months) | 24% | 16–19 lb | 13–17 lb |
| 16 weeks (4 months) | 34% | 22–27 lb | 19–24 lb |
| 20 weeks (5 months) | 44% | 29–35 lb | 24–31 lb |
| 24 weeks (6 months) | 53% | 34–42 lb | 29–37 lb |
| 32 weeks (7–8 months) | 68% | 44–54 lb | 37–48 lb |
| 40 weeks (9 months) | 80% | 52–64 lb | 44–56 lb |
| 12 months | 92% | 60–74 lb | 51–64 lb |
| 18 months | 98% | 64–78 lb | 54–69 lb |
| 24 months | 100% | 65–80 lb | 55–70 lb |
Puppies from bigger parents will track the top of each range, and smaller parents the bottom. For a projection based on your own puppy’s current weight, use the puppy growth calculator.
When do Labs stop growing?
Most Labs are close to adult height by about 12 months. They keep adding chest depth and muscle until roughly 18–24 months. Large breeds can take up to 24 months to reach adult body weight (Salt et al., 2017). See when a Lab puppy is full grown for the short version.
Weight in real life
Many pet Labs weigh more than the standard because they’re overweight, not “big-boned”. In the large UK VetCompass study of 33,320 Labs, adult males averaged 35.2 kg (about 78 lb) and females 30.4 kg (about 67 lb), and overweight/obesity was the second most common recorded problem (McGreevy et al., 2018). Judge your dog by body condition, not the scale: you should be able to feel the ribs easily under a thin fat layer, and the dog should have a visible waist from above. Our weight guide shows the 9-point body condition scale, and the calorie calculator turns a target weight into daily calories.
Shades of chocolate
Chocolates range from a light milk-chocolate brown to a deep liver. Every shade comes from the same recessive bb genotype. The shade differences are normal variation, not separate colors. “Silver” Labs are a different matter: their dilute coat comes from a separate gene, which is covered in silver, charcoal and champagne Labs.
Show (English) vs field (American) build
| Trait | Show / bench lines | Field / working lines |
|---|---|---|
| Head | Broader skull, pronounced stop | Narrower, longer muzzle |
| Body | Stockier, deeper chest | Leaner, longer legs |
| Tail | Thick “otter” tail | Often thinner |
| Energy | Usually calmer as adults | Higher drive, needs more work |
These are general tendencies, not rules. Ask a breeder for the parents’ weights. Then use our puppy growth calculator to estimate your puppy’s adult size.