Where does this come from, and can I check it?

Its 88 keys span just over seven octaves. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a music fact?

Yes. It sits on the Music shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

A piano has about 230 strings

Its 88 keys span just over seven octaves

A modern piano has 88 keys covering just over seven octaves, from A0 to C8, and roughly 230 strings. Treble notes use two or three strings each, while the lowest bass notes use a single thick, wound string.

Steinway & Sons upright piano, model K-52 (mahogany finish), manufactured at Steinway's factory in New York City — Steinway & Sons, 1 Steinway Place, Long Island City, New York 11105, The United States, www.steinway.com . Steinway & So · CC BY-SA 3.0 · licence · source

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: piano, instrument, design

A piano has about 230 strings: the short answers

Where does this come from, and can I check it?: Its 88 keys span just over seven octaves. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a music fact?: Yes. It sits on the Music shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.