How many Kirbies stacked up match Sonic the Hedgehog?
Sonic the Hedgehog measures 1 m (3.28 ft) from the ground up, and Kirby measures 20.3 cm (8 in) from the ground up. Sonic the Hedgehog comes to 4.92 times the height of Kirby, a difference of 79.7 cm (31.4 in). Take 4 Kirbies stacked up and you reach 81.3 cm (32 in), still 18.7 cm (7.37 in) short of Sonic the Hedgehog; one more would overshoot by 1.6 cm (0.6 in). Sonic the Hedgehog is written in single metres and Kirby in tens of centimetres, a whole band of scale apart.
| Object | Real size | Axis measured | What the figure covers |
|---|---|---|---|
| Sonic the Hedgehog | 1 m 3.28 ft |
Height | Ground to highest point |
| Kirby | 20.3 cm 8 in |
Height | Ground to highest point |
Both figures, Sonic the Hedgehog and Kirby, come from the Size It Up measurement set, one real-world size and one measured axis per object, last checked in September 2026; outline provenance is listed on the sources page.
Why this one is hard to judge by eye
Both shapes fit in a single glance here, which ought to make 4.92 to one obvious between Sonic the Hedgehog and Kirby, and it is not: at this size the eye compares whole outlines while the figures above compare one axis. On the drawing above Sonic the Hedgehog is about 1.99 times as tall as it is wide and Kirby about 1.26 times as wide as it is tall, so the two outlines fill the frame in ways that have nothing to do with the one axis being compared.
What each figure covers
Sonic the Hedgehog. The height is the official figure for the character, stated in the original manual and quoted unchanged for three decades.
Kirby. Kirby is stated at eight inches, one of very few characters in this set with an exact official size. The metric figure here is that conversion rather than an estimate.
Sonic the Hedgehog and Kirby are both quoted as a height, which is what makes the ratio above a like-for-like figure.
What else is about that size?
Measured the same way, Sonic the Hedgehog at 1 m sits within a tenth of Chimpanzee at 1 m, Dodo at 1 m and Ewok at 1 m. Kirby at 20.3 cm has A5 Paper at 21 cm and Gingy at 21.5 cm for company, within a tenth. Swapping any of those in for Sonic the Hedgehog would move its ratio to Kirby by less than 10%.