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毫米 — pronunciations, definitions, and tags
Hanzi
Pinyin
English
Tags
毫米
háomǐ
millimeter
HSK 6, q, 17 strokes, rank #6667, Hard
háomǐ(hao2mi3)hao mi T2
1millimeter
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March 24, 2026
毫米háomǐ(hao2mi3)
毫米 (háo mǐ) refers to a unit of measurement equal to one thousandth of a meter, commonly used in fields such as engineering, construction, and science. It is often used to specify dimensions or tolerances in technical contexts, highlighting precision and accuracy.
Strokes17Frequency#6667DifficultyHard
Cultural note
In China, precise measurements are crucial in manufacturing and construction industries, where 毫米 is frequently used. The emphasis on accuracy reflects the country's commitment to quality in production.
Memory tip
Imagine a tiny millimeter as a small, thin hair (毫) that measures just a sliver of space (米). Picture yourself using a ruler where each millimeter is represented by a single hair, making it easier to remember the small scale of this measurement.
Meanings of 毫米
háomǐ(hao2mi3)
1millimeter
Exercise 1 of 2
By ear
Play it, then pick what 毫米 means.
About 毫米
毫米Simplified
17Strokes
—Radical
量词liàngcímeasure word (mw.)Part of Speech
#6667Frequency Rank
HSK 2.0L6HSK 3.0L6IntermediateTOCFLL4HSKKL2CEFRB1
Podcast: 毫米
Podcast: 毫米
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AI study notes for 毫米
Usage Notes
Be careful not to confuse 毫米 with other units like 厘米 (centimeter) or 米 (meter). This term is more commonly used in technical contexts, so it's less formal in everyday conversation. When discussing measurements, you might say '长10毫米' (10 millimeters long) to specify size.
HSK Study Tips
As an HSK Level 6 word, 毫米 connects well with other measurement-related vocabulary. Students should focus on using it in the context of discussing sizes and dimensions, which is common in technical discussions and academic writing.
Common Mistakes
Learners often mistakenly use 毫米 when they mean 厘米. For example, saying '这条线长5毫米' (This line is 5 millimeters long) when they actually mean 'centimeters' can lead to confusion. Always double-check the unit you are referring to.
AI-enhanced 2026-03-24
Pronunciation of 毫米
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Example
Learning Lab
Knowing 毫米 is seven skills, not one.
Its meaning, its character, its pinyin, its tone — hearing it, saying it, writing it. The Learning Lab measures each one from your own practice, on every word you study, so you see what you actually know rather than how much you have done.
毫米 (háo mǐ) refers to a unit of measurement equal to one thousandth of a meter, commonly used in fields such as engineering, construction, and science. It is often used to specify dimensions or tolerances in technical contexts, highlighting precision and accuracy.
When to use 毫米
Be careful not to confuse 毫米 with other units like 厘米 (centimeter) or 米 (meter). This term is more commonly used in technical contexts, so it's less formal in everyday conversation. When discussing measurements, you might say '长10毫米' (10 millimeters long) to specify size.
What learners get wrong
Learners often mistakenly use 毫米 when they mean 厘米. For example, saying '这条线长5毫米' (This line is 5 millimeters long) when they actually mean 'centimeters' can lead to confusion. Always double-check the unit you are referring to.
Write 毫米
毫
米
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Practice writing 毫米 stroke by stroke. Watch the animation to learn the stroke order, then try writing it yourself.
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Grammar patterns of 毫米
毫米 functions as a measure word. Place it between a number/demonstrative and the noun it counts (一本书, 这个人). Different categories of nouns require different measure words. The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.
Exercise 1 of 4
Fill the gap
Type the missing word. Pinyin works; then pick the character.
这辆轿车比原先的车型短了约40____。
The car is some 40mm shorter than its predecessor.
Example sentences for 毫米 (10)
Listen to all sentences once to receive XP
1
这辆轿车比原先的车型短了约40毫米。
zhè liàng jiàochē bǐ yuánxiān de chē xíng duǎn le yāo40 háomǐ。
The car is some 40mm shorter than its predecessor.
2
本地区去年的降雨量不足50毫米.
běndì Ōu qùnián de jiàng yǔ liáng bùzú50 háomǐ.
The annual rainfall in this area was less than 50 mm last year.
3
这块宝石高28.6毫米，重139.43克拉。
zhè kuài bǎoshí gāo28.6 háomǐ， zhòng139.43 kè lā。
The gemstone is 6 millimetres high and weighs 43 carats.
4
高：210毫米；宽：57毫米；长：170毫米。
gāo：210 háomǐ； kuān：57 háomǐ； cháng：170 háomǐ。
Height: 210 mm. Width: 57 mm. Length: 170 mm.
5
这种机器可用来冲洗500毫米见方的底片,并得到很均匀的效果.
zhè zhǒng jīqì kě yònglái chōngxǐ500 háomǐ jiàn fāng de de piàn, bìng dédào hěn jūnyún de xiàoguǒ.
The machine is capable of processing 500 mm square plates very uniformly.
6
口径为120毫米的迫击炮的射程是1.8万码。
kǒujìng wèi120 háomǐ de pò jī bāo de shè chéng shì1.8 wàn mǎ。
The 120mm mortar has a range of 18,000 yards.
7
利雅得在12小时内降水就达25毫米。
lì yǎ de zài12 xiǎoshí nèi jiàngshuǐ jiù dá25 háomǐ。
