Cai Lun

48 - 121

Photo of Cai Lun

Icon of person Cai Lun

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

Since 2007, the English Wikipedia page of Cai Lun has received more than 323,974 page views. His biography is available in 62 different languages on Wikipedia (up from 59 in 2019). Cai Lun is the 17th most popular inventor (up from 19th in 2019), the 25th most popular biography from China (up from 41st in 2019) and the most popular Chinese Inventor.

Cai Lun is most famous for inventing paper.

Memorability Metrics

  • 320k

    Page Views (PV)

  • 80.82

    Historical Popularity Index (HPI)

  • 62

    Languages Editions (L)

  • 13.34

    Effective Languages (L*)

  • 2.64

    Coefficient of Variation (CV)

Page views of Cai Luns by language


Among inventors, Cai Lun ranks 17 out of 355Before him are Louis Braille, Charles Babbage, Louis Daguerre, George Stephenson, Samuel Morse, and Nikolaus Otto. After him are Nicéphore Niépce, Samuel Colt, Thomas Newcomen, Werner von Siemens, Antonio Meucci, and Karl Ferdinand Braun.

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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 is Pompeia Plotina.

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 25 out of 1,186Before him are Xi Jinping (1953), Hu Jintao (1942), Kangxi Emperor (1654), Qianlong Emperor (1711), Mencius (-372), and Xuanzang (602). After him are Zhuge Liang (181), Liu Bei (161), Guan Yu (162), Du Fu (712), Zhuang Zhou (-369), and Hongwu Emperor (1328).

Among INVENTORS In China

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