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French Bulldog full grown

A full grown French Bulldog weighs under 28 pounds and stands 11 to 13 inches at the shoulder. The AKC standard sets 28 pounds as a ceiling, and most pet Frenchies finish between 20 and 28 pounds. They reach adult weight at around ten months.

full grown, across every size
18 to 28 lbfull grown, across every size
at the shoulder
11 to 13 inat the shoulder
before growth slows to a crawl
10 monthsbefore growth slows to a crawl

French Bulldog weight calculator

Answers update as you move the sliders.

Age unit
Weight unit
Expected adult size

Medium: 20 to 33 lb as an adult.

SexOptional

Likely adult weight

22lb

8 in 10 land between
17.7 to 30 lb
Fully grown
around 10 months

Size class: Medium, 20 to 33 lb

2Now4681012Adult
Age in monthsSo farProjected

Fair. Four to five months is the usual time to make this estimate. It is reasonable now, but the range is still wide.

Estimate only. For health questions, ask your vet. Mixed breeds can land outside the range.

See the expected weight month by month
AgeLikely weightRange
2 months5.2 lb2.7 to 9.4 lb
3 months7.9 lb4.5 to 13.7 lb
4 months10.9 lb6.6 to 18.2 lb
5 months13.5 lb8.4 to 22 lb
6 months15.7 lb9.9 to 25 lb
7 months17.3 lb11 to 27 lb
8 months18.4 lb12 to 29 lb
9 months19.2 lb12.7 to 30 lb
10 months19.8 lb13 to 30 lb
11 months20 lb13.4 to 30 lb
12 months20 lb13.6 to 31 lb
13 months21 lb14 to 31 lb
14 months21 lb14.4 to 31 lb
15 months21 lb14.6 to 31 lb
16 months21 lb14.9 to 31 lb
17 months21 lb15 to 31 lb
18 months22 lb16.4 to 31 lb

Scroll the table sideways to see every column.

Expected weight month by month, from the same estimate.

In short

Key takeaways

  1. A full grown French Bulldog weighs 18 to 28 lb across all its sizes.
  2. The weight and height here come from the official breed standard.
  3. Most of the growing is done by about 10 months.
  4. A short coat keeps the grooming bill low.
  5. "mini" is a seller's word, not a recognized size.

Adult size

Adult size and growth chart

French Bulldog

Medium size class · Category III (9 to under 15 kg)

Breed standard
adult weight
18 to 28 lbadult weight
height at the shoulder
11 to 13 inheight at the shoulder
most growing done by
10 monthsmost growing done by

The AKC standard says "under 28 pounds" and 11 to 13 inches. The 18 pound floor is ours, for drawing the chart.

French Bulldog growth chart. Weight runs from about 4 to 6 pounds at 2 months, up to about 18 to 28 pounds at 18 months, for a full grown French Bulldog.
Estimated from the adult weight range above and the growth standard for the medium size class. The band runs from the low end of the adult range to the high end.
See the French Bulldog weight by age as a table
AgeLow endHigh end
2 months4.1 lb6.4 lb
3 months6.3 lb9.8 lb
4 months8.8 lb13.6 lb
5 months10.9 lb16.9 lb
6 months12.6 lb19.6 lb
7 months13.8 lb21.5 lb
8 months14.8 lb23 lb
9 months15.4 lb24 lb
10 months15.9 lb24.7 lb
11 months16.1 lb25 lb
12 months16.3 lb25.4 lb
15 months17 lb26.4 lb
18 months17.9 lb27.8 lb

Scroll the table sideways to see every column.

Timing

When a French Bulldog stops growing

In our figures, a dog in the medium size class has done almost all of its weight gain by about 10 months. After that the weekly gain drops below a quarter of a percent of adult weight, which is slow enough that you will not see it on the scales week to week.

Height finishes earlier than weight. The AKC puts small breeds at full size by 6 to 8 months, medium breeds at around 12 months, and giant breeds at 12 to 18 months, with some very large breeds taking up to 24.

10 months

before weekly weight gain drops below a quarter of a percent of adult weight

Variation

Why individual French Bulldogs differ

A French Bulldog is heavy for its height. At 11 to 13 inches it weighs about as much as a dog several inches taller, because the build is so dense.

Weight matters more in this breed than in most. A flat-faced dog carrying extra weight has a harder time breathing and cooling, which is a reason to keep the vet involved rather than aiming at a number.

Sellers advertise "mini" and "teacup" Frenchies. The AKC standard has one size and no variety beneath it.

Sales words

"mini" is not a size

You will see French Bulldog puppies advertised as "mini", "teacup", "micro". None of those is a recognized variety in any registry.

The Chihuahua Club of America, writing about its own breed, lists “Teacup, Pocket Size, Tiny Toy, Miniature or Standard” as labels attached to the breed and calls them incorrect and misleading, used to make a puppy seem more valuable. The same reasoning applies wherever the words turn up.

A puppy sold under one of these labels grows up as an ordinary French Bulldog, usually at the light end of the range and sometimes not. The label tells you nothing useful about adult size. Your puppy's own weight does, which is what the calculator on this page uses.

FAQ

Questions people ask

How big is a French Bulldog full grown?
18 to 28 pounds across every size this breed comes in, standing 11 to 13 inches at the shoulder. Those figures come from the breed standard.
How can I tell how big my French Bulldog puppy will get?
Weigh your puppy and enter its age in the calculator on this page. It is already set to the medium growth curve for this breed, so it works backwards from where your puppy is now rather than from the breed average. Four to six months is when the estimate is most reliable.
When does a French Bulldog stop growing?
Weight gain slows to almost nothing at around 10 months for a dog in the medium size class. Height finishes earlier than weight in every breed.
How much does a full grown French Bulldog weigh?
Under 28 pounds, by the AKC standard. Most pet Frenchies land between 20 and 28.
When is a French Bulldog full grown?
Around ten months for weight. Our figures put the medium size class at about 88 percent of adult weight at ten months.
Is a mini French Bulldog a real size?
No. The AKC recognizes one French Bulldog, capped at 28 pounds. Mini and teacup are sellers' words, and breeding for very low weight in a flat-faced breed adds risk rather than value.

Method

How we calculate this

The adult weight and height come from the sources below. The shape of the growth chart comes from our own calculation on the open data behind a published veterinary growth standard, described on the how we calculate page. The charts are estimates built from a breed range and a population curve, not measurements of this breed.

Sources

4 sources behind the figures on this page.

  • French Bulldog breed standard

    American Kennel Club - read 2026-10-08

    akc.org

  • Growth standard charts for monitoring bodyweight in dogs of different sizes

    Salt C, Morris PJ, German AJ, Wilson D, Lund EM, Cole TJ, Butterwick RF. PLoS ONE 12(9):e0182064 - dated 2017-09-06 - read 2026-10-08

    Open access. Sets the adult-size categories and the growth standard method.

    pmc.ncbi.nlm.nih.gov

  • Growth standard charts for monitoring bodyweight in dogs of different sizes - supporting data

    University of Liverpool Data Catalogue - dated 2017-07-28 - read 2026-10-08

    14,957,947 weight records from Banfield Pet Hospitals, 1994-2013, released under CC BY 4.0. Our growth curves are calculated from this file.

    datacat.liverpool.ac.uk

  • When Does My Puppy Finish Growing?

    American Kennel Club - read 2026-10-08

    akc.org

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Last reviewed . Estimate only. For health questions, ask your vet.