Kai vs Eithan

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Boy #227 Most Popular 2 Syllables

"strong, firm, enduring"

Origin: Hebrew

American Hebrew Latino

✓ All Clear

Kai Rank #76

Eithan Rank #227

Kai is more popular, ranked #76 vs #227 for Eithan.

Is Kai or Eithan more popular?

Kai is more popular, ranked #76 compared to Eithan at #227 in the United States.

What do Kai and Eithan mean?

Kai means "sea" (Hawaiian origin). Eithan means "strong, firm, enduring" (Hebrew origin).

Are Kai and Eithan boy or girl names?

Kai is primarily a boy name. Eithan is primarily a boy name.