3.6 t7,940 lb
A fully grown Groot weighs 8,000 lb, about 3,600 kg, according to Marvel’s official comics profile, which puts him at 23 ft (7 m) tall. That is the comic-book Groot at full height. The movies never give a weight, and their Groot is much smaller: scaled down to his 2.4 m height, he would weigh roughly 145 kg.
| Comics, fully grown, 7 mMarvel.com: 8,000 lb (its stat box says 4.1 tons) | 3.6 t7,940 lb |
|---|---|
| Guardians of the Galaxy (2014), about 2.4 mEstimate: the official figure scaled to his height | 145 kg320 lb |
| Adolescent Groot, Avengers: Infinity War (2018), 1.63 mEstimate; probably less, as he is very slender | 45 kg99.2 lb |
| Baby Groot, Guardians of the Galaxy Vol. 2 (2017), 26 cmEstimate, about the weight of a smartphone | 190 g6.7 oz |
Marvel’s own character page for the comics Groot says that at full height he can reach 23 feet tall and weigh 8,000 pounds. That is 7 m and about 3,600 kg, the number we use.
The same page has a stat box that says “23' (variable)” and “4.1 tons (variable)”, the figures from the Official Handbook of the Marvel Universe A to Z (2010). Read as US tons, 4.1 tons is 8,200 lb or about 3,720 kg, so Marvel’s two numbers differ by about 3%. Both carry the word “variable” for a reason: Groot can regrow his whole body from a single twig, and in the comics he can also grow far past 7 m when he needs to.
Pretty much. A person 1.75 m tall takes up about 70 litres. Scale that body up to 7 m, four times taller, and the volume grows 4 × 4 × 4 = 64 times, to about 4.5 cubic metres. Dividing 3,630 kg by that volume gives a density of about 810 kg per cubic metre.
That is very close to seasoned oak, which the Engineering ToolBox lists at 600 to 900 kg per cubic metre (American white oak at 770). So the official weight fits a 7 m humanoid built from dense hardwood.
Marvel Studios has never given one. The best we can do is take the same 810 kg per cubic metre and scale it to the heights measured on screen. Dimensions.com puts the 2014 Groot at about 2.4 m (7 ft 10 in), which works out to roughly 145 kg (320 lb). A SYFY Wire growth analysis used a taller 12 ft 4 in for that Groot, which would mean about 560 kg, so treat these as rough guides.
The Groot after that is a different tree. James Gunn has said Baby Groot is the son of the first Groot, grown from a twig Rocket planted. Baby Groot stands about 26 cm (10 in), which by the same maths is under 200 g, and the adolescent Groot of Avengers: Infinity War is about 1.63 m, around 45 kg or less given how thin he is. By Guardians of the Galaxy Vol. 3 he has grown bigger and bulkier than the first Groot.
The first film does show his stats once: the Nova Corps lineup screen lists his “phase of growth” as 370 microbules and his weight as 4,258 grets, units that exist only in the Guardians universe.
In the comics, Marvel lists him at 23 ft (7 m) at full height. In the movies he is about 2.4 m in Guardians of the Galaxy (2014), 26 cm as Baby Groot and about 1.63 m as an adolescent in Avengers: Infinity War.
Marvel’s comics profile gives 4.1 tons in its stat box and 8,000 lb in its biography. That is roughly 3.6 to 3.7 tonnes.
There is no official figure. At 26 cm tall and built from wood as dense as the comics Groot, he would weigh about 190 g, close to a smartphone.
No. Director James Gunn has said Baby Groot is the first Groot’s son, grown from a twig Rocket saved after the Battle of Xandar. He does not have his father’s memories.
The Official Handbook of the Marvel Universe says the comics Groot can lift more than 100 tons, about 25 times his own weight.
Last checked October 2, 2026.
