mm2

mm2 commonly denotes square millimeters, a unit of area in the metric system. It represents the area of a square that is one millimeter on each side. One square millimeter equals 1e-6 square meters. mm2 is widely used to express small dimensions in fields such as electronics, engineering, and biology, including measurements of chip features, sensor footprints, and micro-scale components.

MM2 also refers to Murder Mystery 2, a popular Roblox game developed by Nikilis. In each round, players are assigned roles such as Innocent, Sheriff, or Murderer. The Murderer aims to eliminate others, the Sheriff seeks to stop the killer, and Innocents try to survive while uncovering who the killer is. Rounds occur on rotating maps and are time-limited, emphasizing deduction, stealth, and social interaction. The game features a progression and cosmetic system, with items like knives, hats, and other accessories obtainable through in-game currency or crates. Updates frequently add new maps, modes, and limited-edition items, sustaining an active community and continued player engagement.

In other contexts, mm2 can appear as an abbreviation for square millimeters in technical documentation, product specifications, and scientific papers. The two primary uses—unit measurement and the Roblox title Murder Mystery 2—reflect the term’s diverse usage across disciplines and online culture.