Kai

«Sea»

That is what Kai carries inside: a name of Hawaiian origin with centuries behind it.

3 is its number and Jupiter its planet. Creative, expressive and full of joy. It all adds up to something clear: creativity, joy and charisma.

Every name holds three numbers, and Kai's tell this story:

Expression 3 · Jupiter: Creative, expressive and full of joy.

Soul 1 · Sun: beneath the surface, its compass points to independence and achievement.

Personality 2 · Moon: right away, it leaves an impression that is warm and approachable.

Of Hawaiian origin, this name belongs to a rich cultural tradition with its own history and meaning. Kai grows out of that history: a «Sea» that time has not worn down. By its number 3, Kai is linked to the day Thursday, the color Purple, the element Air and the stone Amethyst.

Kai is on the rise. According to official Social Security records, 26,927 boys named Kai were registered in the U.S. between 2020 and 2025, reaching rank #71.

The most telling detail is its recent trajectory: it ranked #150 in the 2010s — a climb of 79 spots. Kai went from uncommon to one of the favorites of a new generation of parents.

It entered the top 200 in the 2010s and hasn't left since.

Source: Social Security Administration (U.S.), official records by decade, as of 2026.

If Kai already caught your eye, give it the test: say it with your last name and listen to how it flows. Its meaning («Sea») does half the work; the sound does the rest. Torn between two? Compare their compatibility on Astra.

Does Kai match another name? Try it in our compatibility calculator.