Male woolly mammoths stood 2.67 to 3.49m (8ft 9in to 11ft 5in) at the shoulder, up to about two average men tall, while the giant rhino relative Paraceratherium was about 4.8m (15.7ft), 2.7 times an average UK man at 1.78m. The sabre-toothed cat Smilodon was far smaller, at 1.0 to 1.2m.
Prehistoric giants compared with a person
Heights are at the shoulder (the bison and the rhino at the shoulder or withers). Many are estimates from fossils, which the pages say, so treat them as ranges. Ratios are against the UK average man (178.21cm), rounded to one decimal place.
| Animal | Shoulder height | Ratio to UK average man |
|---|---|---|
| Woolly rhinoceros | 1.45 to 1.6m (up to about 1.9m) | 0.8 to 0.9 (up to 1.1) |
| Smilodon fatalis | about 1.0m (39in) | 0.6 |
| Smilodon populator | about 1.2m (47in) | 0.7 |
| Irish elk | about 2m (6ft 7in) | 1.1 |
| Steppe bison (large bull) | over 2m (6ft 7in) | over 1.1 |
| Woolly mammoth (female) | 2.3 to 2.6m | 1.3 to 1.5 |
| Woolly mammoth (male) | 2.67 to 3.49m | 1.5 to 2.0 |
| Palaeoloxodon namadicus | about 4.35m (14.3ft) | 2.4 |
| Paraceratherium | about 4.8m (15.7ft) | 2.7 |
| Name | Height |
|---|---|
| UK average man | 178.2 cm |
| Smilodon populator | 120 cm |
| Woolly mammoth (large male) | 315 cm |
| Paraceratherium | 480 cm |
Woolly mammoths: big, but not the biggest
Wikipedia gives average male woolly mammoths as 2.8 to 3.15m at the shoulder and 4.5 to 6 tonnes. Females were 2.3 to 2.6m and 2.8 to 4 tonnes. Regional differences were large: Western European males stood 2.99 to 3.31m, Siberian males 2.66 to 2.94m, and a Wrangel Island adult male about 2.8m.
The largest specimen, from Siegsdorf in Germany, is estimated at 3.49m and 8.2 tonnes. A large male mammoth was roughly the size of a large African bull elephant, as how tall an elephant is compared with a human shows.
Paraceratherium: a giant among land mammals
Paraceratherium, a hornless rhinoceros relative from Asia, is one of the largest land mammals known, at about 4.8m at the shoulder. The 4.8m figure comes from a 1997 revision of an earlier 5.25m estimate, and a 2015 study gave 4.8m for the largest known remains. The thigh bone alone measured about 1.5m.
Body length is estimated at 7.4m and weight at about 15 to 20 tonnes. The page says earlier estimates of 30 tonnes are now considered exaggerated. All of these come from incomplete skeletons.
Predators and megafauna
Smilodon was shorter than most people expect. Smilodon fatalis reached about 100cm at the shoulder and weighed 160 to 280kg, while Smilodon populator stood about 120cm and typically weighed 220 to over 400kg. See big cat sizes compared with a human for living cats.
The woolly rhinoceros stood 1.45 to 1.6m at the shoulder, with a nasal horn of 1 to 1.35m in prime adults. The Irish elk stood about 2m, with antlers spanning more than 4.2m. The giant ground sloth Megatherium was about 6m long and weighed 3.5 to 4 tonnes, but the page gives no standing height, so it is not on the board.
How do these compare with dinosaurs?
Even Paraceratherium is far below the big sauropods. See the biggest dinosaurs compared to a human and T. rex vs human size.
Method and sources
Heights are as stated on the Wikipedia pages listed above, read on 29 October 2026. Most prehistoric figures are estimates from partial skeletons, and where pages disagree (Paraceratherium, the Asian elephant relatives) we show the most recent revision and say so. The UK average man (178.21cm) comes from this site’s dataset, compiled from NCD-RisC. Ratios are simple division and rounded. Feet and inches convert at 2.54cm per inch. Last reviewed 29 October 2026.
Open the comparison board to stand a mammoth or a sabre-toothed cat beside a person, or use the height converter to switch units.