Kai

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Primarily a boy's name · 100% boys

Origin: German

Meaning

The name Kai has various origins and meanings in different cultures: In Estonian, Kai is a female name derived from Katherine. In Persian, Kai, or Kay, is a male name, meaning "king". It is also the name of a mythological shah in the Shahnameh.

From Wikipedia

Kai first appears in the data in 2001 and has been recorded in 25 different years as a boy's name. Its single biggest year was 2016 with 908 babies (rank #54 that year). In 2025 it was given to 532 boys (rank #28). Its popularity has been fairly steady recently.

Numerology of Kai

In Pythagorean numerology, every letter has a value from 1 to 9. Adding the letters of Kai yields these three numbers โ€” a playful read on the name's character.

8,512
Total babies (all years)
25
Years in the data
908
Peak in a single year

Popularity Over Time โ€” Boys

Famous people named Kai

→ See names similar to Kai  ·  Compare Kai with another name โ†’  ·  Popular names of the 2010s  ·  Boys names starting with K

More popular boys' names

Names ranked near Kai in 2025

Other boys' names starting with K

Year-by-Year Detail

Rank is among all boys' names registered that year.

Year Babies Rank
200156#107
2002170#80
2003206#65
2004113#94
2005204#74
2006149#62
2007135#74
2008244#71
2009170#91
2010230#75
2011222#75
2012260#68
2013155#93
2014310#60
2015806#64
2016908#54
2017424#56
2018424#53
2019559#55
2020419#51
2021425#36
2022412#32
2023402#27
2024576#23
2025532#28