Cai vs Emma

Baby Name Comparison — 2026

Cai

Boy #1,906 Most Popular 1 Syllable

Meaning

"rejoice, delight"

Origin: Latin via Welsh

Cultural Roots

Welsh Chinese English

Quick Stats

Popularity Rank
#1,906
Total SSA Count
83
Syllables
1
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Cai →

Emma

Girl #2 Most Popular 2 Syllables

Meaning

"strength"

Origin: Germanic

Cultural Roots

English German French

Quick Stats

Popularity Rank
#2
Total SSA Count
13,485
Syllables
2
Formality
Moderate
Nicknames
Em, Emmy

Playground Safety Score

✓ All Clear
Full profile for Emma →

Popularity Comparison

Cai Rank #1,906
Emma Rank #2

Emma is more popular, ranked #2 vs #1906 for Cai.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cai ___

  • Cai James
  • Cai River
  • Cai Alexander
  • Cai Thomas
  • Cai Owen
  • Cai Finn

Emma ___

  • Emma Rose
  • Emma Grace
  • Emma Jane
  • Emma Louise
  • Emma Kate
  • Emma Marie

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cai

Nia Rhys Lena Beau Seren

If you choose Emma

Olivia Charlotte Liam Henry Sophia

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 Cai or Emma more popular?

Emma is more popular, ranked #2 compared to Cai at #1906 in the United States.

What do Cai and Emma mean?

Cai means "rejoice, delight" (Latin via Welsh origin). Emma means "strength" (Germanic origin).

Are Cai and Emma boy or girl names?

Cai is primarily a boy name. Emma is primarily a girl name.

More Comparisons

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← Full profile: Cai ← Full profile: Emma Browse all baby names