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Peter vs Kai

Baby Name Comparison — 2026

Peter

Boy #192 Most Popular 2 Syllables

Meaning

"rock, stone"

Origin: Greek

Cultural Roots

English Greek Dutch Scandinavian German

Quick Stats

Popularity Rank
#192
Total SSA Count
1,889
Syllables
2
Formality
Moderate

Playground Safety Score

12 High Risk

{:type=>:nickname, :severity=>:medium, :message=>"'Peter' can be twisted to 'peter'"}

Similar Names

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

Similar Names

Popularity Comparison

Peter Rank #192
Kai Rank #76

Kai is more popular, ranked #76 vs #192 for Peter.

Frequently Asked Questions

Is Peter or Kai more popular?

Kai is more popular, ranked #76 compared to Peter at #192 in the United States.

What do Peter and Kai mean?

Peter means "rock, stone" (Greek origin). Kai means "sea" (Hawaiian origin).

Are Peter and Kai boy or girl names?

Peter is primarily a boy name. Kai is primarily a boy name.

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