Chi or qi?
chi is a noun meaning “The twenty-second letter of the Classical and Modern Greek alphabets”; qi is a noun meaning “Alternative form of chi”. In written English (wordfreq, 2021 data) chi is about 4.6 times as common as qi.
What is the difference between chi and qi?
| chi | qi | |
|---|---|---|
| Part of speech | noun | noun |
| Meaning | The twenty-second letter of the Classical and Modern Greek alphabets A life force in traditional Chinese philosophy, culture, medicine, etc, related (but not limited) to breath and circulation The Chinese foot, a traditional Chinese unit of length based on the human forearm | Alternative form of chi |
| Example | none recorded | none recorded |
| Forms | chis | qis |
| Pronunciation | /kaɪ/ /t͡ʃiː/ /t͡ʃə/ | /t͡ʃiː/ |
| In writing | 8.9 times per million words | 1.9 times per million words |
Sources: chi and qi in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of chi and qi
chi
- 1
The twenty-second letter of the Classical and Modern Greek alphabets
- 2
A life force in traditional Chinese philosophy, culture, medicine, etc, related (but not limited) to breath and circulation
- 3
The Chinese foot, a traditional Chinese unit of length based on the human forearm
- 4
Clipping of chihuahua
- 5
informalClipping of Chihuahua
- 6
Abbreviation of Chicago: a city in Illinois, United States
- 7
The Chinese unit of length standardized in 1984 as ¹/₃ of a meter
- 8
The Taiwanese unit of length standardized as ¹⁰/₃₃ of a meter, identical to the Japanese shaku
qi
- 1
Alternative form of chi
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, chi or qi?
chi appears 8.9 times per million words; qi 1.9 times per million words.
chi 8.9 times per million wordsqi 1.9 times per million words
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search chi vs qi?
“chi vs qi” is searched about 260 times a month on Google and 20 on Bing in the United States. Google counts close variants of a query together (“qi vs chi”, “chi or qi”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.