Convert Pinyin tone numbers to tone marks, or marks to numbers. Keep punctuation and letter case, with ü, v and u: support.
Supports ü, v and u: input shortcuts. Spaces, punctuation, apostrophes and letter case are preserved. Use spaces between syllables when a joined spelling is ambiguous.
In the other direction, a marked syllable becomes its base spelling followed by 1–4. The result uses ü, including when you entered v or u: as a shortcut.
Plain ma might be a neutral syllable, or someone might have omitted its tone. By default it stays ma. Enable the neutral-tone option only when you know that your separate unmarked syllables are neutral.
Invalid or ambiguous spellings remain unchanged and are reported. The converter changes notation; it does not proofread a sentence, find a Chinese word or decide which tone you intended.
Review the four tones and neutral tone →Mark a first, otherwise e, otherwise o in ou. For iu and ui, the second vowel receives the mark: liú and guì. Other ordinary syllables use their remaining vowel. The converter applies this placement to recognized syllable spellings.
Numbered words such as Zhong1guo2 have explicit syllable endings. Joined marked words such as Zhōngguó are converted when their syllables can be separated unambiguously. Add spaces if a word is left unchanged, especially when it mixes marked and unmarked syllables.
A neutral tone has no written mark, so ma5 and ma0 both become ma. The original number is lost in that notation. To add a neutral number when converting back, select the neutral-tone option and choose 0 or 5.
No. ni3 hao3 becomes nǐ hǎo. A speaker normally changes the first third tone in that combination, but notation conversion does not change the underlying tones you supplied.
The conversion runs in this page without dictionary downloads or a conversion server. Your input is kept in page memory and is not saved by the tool. Browser Back/Forward restoration may preserve the view; reloading starts a new page session.