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Cai Lun

48 - 121

Photo of Cai Lun

Icon of person Cai Lun

Cai Lun (Chinese: 蔡伦; courtesy name: Jingzhong (敬仲); c. 50–62 – 121 CE), formerly romanized as Ts'ai Lun, was a Chinese eunuch court official of the Eastern Han dynasty. He is traditionally regarded as the inventor of paper and the modern papermaking process. Read more on Wikipedia

Since 2007, the English Wikipedia page of Cai Lun has received more than 527,576 page views. His biography is available in 65 different languages on Wikipedia (up from 62 in 2019). Cai Lun is the 17th most popular inventor, the 24th most popular biography from China (up from 25th in 2019) and the most popular Chinese Inventor.

Cai Lun is most famous for inventing paper.

Memorability Metrics

  • 530k

    Page Views (PV)

  • 74.90

    Historical Popularity Index (HPI)

  • 65

    Languages Editions (L)

  • 12.79

    Effective Languages (L*)

  • 2.80

    Coefficient of Variation (CV)

Page views of Cai Luns by language


Among inventors, Cai Lun ranks 17 out of 354Before him are Louis Braille, Charles Babbage, Samuel Morse, Rudolf Diesel, Nikolaus Otto, and George Stephenson. After him are Louis Daguerre, Nicéphore Niépce, John Logie Baird, Karl Ferdinand Braun, Samuel Colt, and Charles K. Kao.

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Among people born in 48, Cai Lun ranks 1After him is Ulpia Marciana. Among people deceased in 121, Cai Lun ranks 1After him are Pompeia Plotina, Deng Sui, and Pope Primus of Alexandria.

Others Born in 48

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Others Deceased in 121

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In China

Among people born in China, Cai Lun ranks 24 out of 1,392Before him are Du Fu (712), Cao Cao (155), Wu Zetian (624), Qianlong Emperor (1711), Ip Man (1893), and Xuanzang (602). After him are Lü Bu (161), Guan Yu (162), Kangxi Emperor (1654), Liu Bei (161), Yongle Emperor (1360), and Li Ching-Yuen (1677).

Among INVENTORS In China

Among inventors born in China, Cai Lun ranks 1After him are Charles K. Kao (1933), Bi Sheng (990), Taiichi Ohno (1912), Yuan Longping (1930), Thonmi Sambhota (618), An Wang (1920), and Robin Li (1968).