Chinese Numerals (一二三) vs Arabic Digits

Open any Chinese newspaper, menu, or chat and you will see numbers written two different ways, sometimes in the same sentence: with numeral characters — 一 二 三 四 五 六 七 八 九 十 — or with the Arabic digits 1 2 3 you already know. Neither is "more Chinese" than the other; both are standard, and knowing which turns up where is part of reading real text. This page shows how the numeral characters are built, where each system is used, and the special anti-fraud numerals you'll meet on receipts and checks. The mechanics of counting — grouping by ten-thousands, and the 二/两 split — get their own pages in the Numbers group.

The ten building blocks

Everything starts with eleven characters — the digits one to nine, plus zero and ten:

Look at the first three — 一 二 三 — and you can see the pictographic origin: one line, two lines, three lines. It is the most literal counting system imaginable, and the only place in the script where the character openly is the quantity.

Building bigger numbers is transparent

Above ten, the numerals assemble with beautiful regularity — far more transparent than English, which hides irregular forms like "eleven," "twelve," and "twenty" that don't obviously come from one, two, ten. Chinese has no such exceptions:

• 11–19 = 十 (ten) + the digit: 十一 (shíyī) "eleven" is literally "ten-one," 十五 (shíwǔ) "fifteen" is "ten-five."
• 20, 30, … = the digit + 十: 二十 (èrshí) "twenty" is "two-ten," 三十 (sānshí) "thirty" is "three-ten."
• The middle just chains them: 二十一 (èrshíyī) "twenty-one" = "two-ten-one," 九十九 (jiǔshíjiǔ) "ninety-nine" = "nine-ten-nine."
• Hundreds and up use 百 (bǎi) "hundred", 千 (qiān) "thousand": 一百 (yìbǎi) "one hundred," 三百五十 (sānbǎi wǔshí) "three hundred fifty."

Where Arabic digits win

For anything measured, priced, dated, or dialed, modern Chinese reaches for Arabic digits just as readily as English does — often more so. Prices, times, years, addresses, phone numbers, statistics, and math are routinely written 1 2 3:

Notice you can freely mix the two in a single sentence — Arabic digits for the changeable quantity, numeral characters elsewhere. A learner who assumes "real Chinese must be all characters" and laboriously spells out 一百二十 where a native would just type 120 is over-working and, honestly, writing less naturally.

Where the numeral characters win

The character numerals dominate wherever text is formal, literary, idiomatic, or fixed:

• Idioms and set phrases, where the number is baked into the expression and could never be a digit: 五颜六色 (wǔyán liùsè) "multicoloured," 三心二意 (sānxīn èryì) "half-hearted," 乱七八糟 (luànqī bāzāo) "in a total mess."
• Formal and literary dates, spelled with characters (and often 〇 for zero): 二〇二六年 for "2026."
• Chapter and section headers, titles, and elevated prose, where 第一章 (dì-yī zhāng) "Chapter One" reads far better than "第1章."

The anti-fraud numerals: 壹 贰 叁

There is a third numeral set you must be able to recognise even if you rarely write it: the capital / financial numerals (大写, dàxiě). On checks, invoices, contracts, and official receipts, amounts are written in elaborate characters that are hard to alter — you cannot quietly add a stroke to turn 一 into 二 or 十 into 千, but you cannot doctor 壹 or 拾 at all.

A note on 〇 and the older forms

Zero has two written faces: the word 零 (líng) and a plain circle 〇, which stands in for zero inside multi-digit character strings, especially years (二〇二六 for 2026). The Arabic 0 is of course also common. And in older, literary, or regional writing you may occasionally meet 廿 (niàn) "twenty" and 卅 (sà) "thirty" — compact single characters for round numbers (archaic / literary); you should recognise them but you will write 二十 and 三十.

One more pointer: the number two is written 二 (èr) when it's a bare numeral (二十, 第二), but Chinese uses a different word, 两 (liǎng), when two things are counted before a measure word (两个人 "two people"). Which to use when is a genuine sticking point with its own page: 二 vs 两.

Common Mistakes

1. Assuming everything must be written in characters. Mixed usage is normal and often preferred. A price is naturally "120 块," a time "3 点," a year "2026 年" — spelling these out as characters everywhere reads as stiff and non-native.

2. Using a digit where an idiom demands the character. The numbers inside set phrases are frozen. Writing "3心2意" for 三心二意 is not just informal — it's broken; the expression only exists in characters.

3. Forgetting the 一 tone sandhi. 一 is yī alone but shifts to yì / yí inside numbers depending on the following tone: 一百 yìbǎi, 一万 yíwàn. Saying a flat yī bǎi sounds off.

4. Confusing 二 and 两. Bare numeral = 二 (二十, 第二); two counted things = 两 (两杯咖啡 "two coffees"). Saying 二杯咖啡 is a classic learner slip — see 二 vs 两.

5. Not recognising the financial numerals. 壹 贰 叁 肆 伍 拾 佰 仟 are not exotic decoration — they are everyday 一 二 三 四 五 十 百 千 in their anti-fraud dress, and they appear on every receipt and check. Learn to read them.

Key Takeaways

• Numbers are written two ways — numeral characters 一二三…十 and Arabic digits 1 2 3 — and both are standard, often mixed in one sentence.
• The character numerals build transparently: 十一 (11), 二十 (20), 二十五 (25), 一百 (100) — no irregular "eleven/twelve/twenty."
• Arabic digits dominate prices, times, dates, phone numbers, and statistics; character numerals dominate idioms, formal/literary text, ordinals, and headers.
• A separate anti-fraud set — 壹 贰 叁 肆 伍 拾 佰 仟 — appears on checks and receipts; recognise it.
• 一 undergoes tone sandhi (yī → yì / yí) inside numbers, and 二 vs 两 is a real distinction covered on its own page.