What is the Chinese number converter?
This tool converts between Arabic numerals (123) and Chinese numbers, giving both the everyday form (一二三) and the financial capitals (壹貳叄), plus full-width ↔ half-width text conversion. It is handy for filling in cheques and vouchers, writing formal documents, contract amounts and invoices, and tidying full-width letters and digits copied from Chinese documents.
Everyday vs capital numerals
Everyday numerals (一二三十百千萬億) are used in daily writing; financial capitals (壹貳叄肆伍陸柒捌玖拾佰仟) have complex strokes that resist tampering and are used for amounts, just like thecheque amount in words. For example 10025 is 一萬零二十五 in everyday form and 壹萬零貳拾伍 in capitals.
Full-width vs half-width
Letters, digits and punctuation typed under a Chinese IME are often "full-width" (e.g. Ａ, １, ！), taking the width of a Chinese character. Pasting into systems, spreadsheets or code usually needs "half-width" (A, 1, !). This tool converts between the two in one click, including the full-width space.
Privacy
All conversion runs in your browser in JavaScript; your input is never uploaded or stored.
FAQ
What's the difference between everyday and capital numerals?
Everyday numerals are 一二三十百千 used in daily writing; financial capitals are 壹貳叄拾佰仟 — complex strokes that are hard to alter, used on cheques, receipts and contract amounts to prevent tampering.
Can it convert very large numbers?
Yes — it supports 萬 (ten-thousand), 億 (hundred-million) and 兆 (trillion). Extremely large numbers beyond JavaScript's safe integer range may lose precision, but everyday amounts and quantities are unaffected.
What are full-width and half-width characters?
Full-width characters take the width of a Chinese character and often appear when typing letters, digits or punctuation under a Chinese IME (e.g. Ａ, １, ！). Half-width are the normal keyboard characters (A, 1, !). Pasting from Chinese documents into systems or spreadsheets often needs full-to-half conversion.