Capital or capitol: which is correct?

Correct
capital (a city; money; an upper-case letter) / capitol (a legislative building)
Avoid
capitol (for a capital city)
Avoid
capital (for the building where a legislature meets)
Summary

Correct: capital (a city; money; an upper-case letter) / capitol (a legislative building) — Avoid: capitol (for a capital city) / capital (for the building where a legislature meets). Capital = the seat of government, wealth used for investment, or an upper-case letter; capitol = the building in which a legislature meets.

Part of speech
noun
Source
Merriam-Webster

Why

Merriam-Webster: capitol (with an o) names the building where a legislature meets — the Capitol in Washington and the state capitols; every other sense, including the capital city, is capital.

Examples

  • Jakarta is the capital of Indonesia.
  • The protest ended on the steps of the state capitol.
Check your own text: Spell Checker
Catch typos and common misspellings in American or British English, with suggestions, checked right in your browser.
Open tool

Native spelling engine

Checked against
Merriam-Webster / Oxford
Spelling authority
Merriam-Webster · Oxford English Dictionary / Oxford spelling · SCOWL
Commonly confused and non-standard forms
64
Dictionary
Hunspell en_US / en_GB / en_AU / en_CA · Dictionary license: MIT AND BSD (SCOWL combined licence)