Meaning and history
From Japanese 慧 (kei) meaning “intelligent,” 圭 (kei) meaning “gemstone,” or 慶 (kei) meaning “celebration”; the name can also be written with other kanji or combinations of kanji.
20062006: 12 births, rank #6,460
2007: 13 births, rank #6,262
2008: 17 births, rank #5,249
2009: 14 births, rank #6,095
2010: 6 births, rank #10,766
20112011: 11 births, rank #7,009
2012: 16 births, rank #5,482
2013: 19 births, rank #4,804
2014: 25 births, rank #4,014
2015: 33 births, rank #3,365
20162016: 30 births, rank #3,596
2017: 25 births, rank #4,105
2018: 25 births, rank #4,094
2019: 22 births, rank #4,480
2020: 18 births, rank #5,041
20212021: 15 births, rank #5,776
2022: 17 births, rank #5,445
2023: 26 births, rank #4,112
2024: 22 births, rank #4,571
20252025: 14 births, rank #6,143
In 2025, 14 babies were recorded with the name Kei, ranking #6,143 among boys.