Betty vs Kai

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

Meaning

"sea"

Origin: Hawaiian

Cultural Roots

Hawaiian Scandinavian Japanese American Chinese

Quick Stats

Popularity Rank
#76
Total SSA Count
4,276
Syllables
1
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Kai →

Popularity Comparison

Betty Rank #1,009
Kai Rank #76

Kai is more popular, ranked #76 vs #1009 for Betty.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Betty ___

  • Betty Jean
  • Betty Mae
  • Betty Lou
  • Betty Ann
  • Betty Jo
  • Betty Rae

Kai ___

  • Kai James
  • Kai Alexander
  • Kai Michael
  • Kai Robert
  • Kai William
  • Kai Thomas

Sibling Name Ideas

Names that pair well as siblings.

If you choose Betty

Archie Hank Mildred Dot Freddie

If you choose Kai

Zara Nova Mila Leo Finn

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Betty or Kai more popular?

Kai is more popular, ranked #76 compared to Betty at #1009 in the United States.

What do Betty and Kai mean?

Betty means "God is my oath" (Hebrew origin). Kai means "sea" (Hawaiian origin).

Are Betty and Kai boy or girl names?

Betty is primarily a girl name. Kai is primarily a boy name.

More Comparisons

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← Full profile: Betty ← Full profile: Kai Browse all baby names