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Runs directly in the browser
Your text and scores are not sent to a server. The page uses local rules and small static datasets to produce results quickly.
Pinyin tone number-symbol converter
Convert numbered pinyin such as ni3 hao3 into tone-mark pinyin.
Input
All calculations run in your browser and do not call external APIs.
Pinyin tone number-symbol converter
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Built as a study aid
Areas with many exceptions, such as syllables, romanization, and score mapping, are shown as study references rather than official results.
Frequently asked questions
Are the results always exact?
These are rule-based tools. They cover common cases well, but exceptions can exist. Exam and pronunciation results are for reference.
Is my data sent anywhere?
No. These pages run client-side without external APIs.