88key

88key refers to the standard keyboard range used on most pianos and many electronic instruments. A typical 88-key keyboard comprises 52 white keys and 36 black keys, spanning from A0 to C8. This range covers seven full octaves plus a minor third. The design supports the full range of classical piano repertoire and provides space for both low bass and high treble notes.

Historically, the 88-key standard emerged in the late 19th century as piano manufacturers expanded the instrument’s range; since then, 88 keys have become the conventional standard for new pianos and many high-end electronic keyboards. Some compact keyboards and educational instruments use fewer keys to reduce size and cost.

In modern use, 88-key keyboards are favored for performances and teaching those seeking a realistic piano experience. Digital pianos and MIDI controllers with weighted hammer-action keys aim to reproduce acoustic feel. Some users opt for non-weighted or semi-weighted keys for portability.

Note on branding: "88key" or "88-key" is also used in product naming and by some artists or companies as a stylized identifier, though it is not a single universal owner or organization.