Head to head · Girls' names
Karsyn vs Keilani
#718 vs #727 in 2025
Karsyn is a whisker ahead (#718 vs #727 in 2025), but the curves point different ways: Karsyn is stepping back from its peak, Keilani is holding its place on the charts. On momentum, Keilani has the edge.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
The tale of the tape
On the charts, Karsyn leads 4 measures of 6; Keilani leads 2.
Ranks, counts and years are measured in the official US birth record; the classroom and living figures are estimates computed from it. The dot marks the side each measure favours on the charts — more common, not better.
What the records say
146 years of US births, drawn on one scale
Two curves, one scale
Who owned which decade
- 1970s: Karsyn —, Keilani #5030 — Keilani higher
- 1980s: Karsyn —, Keilani #7818 — Keilani higher
- 1990s: Karsyn #4901, Keilani #5145 — Karsyn higher
- 2000s: Karsyn #1199, Keilani #2299 — Karsyn higher
- 2010s: Karsyn #663, Keilani #1489 — Karsyn higher
- 2020s: Karsyn #663, Keilani #700 — Karsyn higher
Karsyn stood higher in 4 of 6 decades; Karsyn has held the lead since the 1990s.
Rank by decade
| Decade | Karsyn | Keilani |
|---|---|---|
| 1970s | — | #5030 |
| 1980s | — | #7818 |
| 1990s | #4901 | #5145 |
| 2000s | #1199 | #2299 |
| 2010s | #663 | #1489 |
| 2020s | #663 | #700 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Karsyn
Not established
The surname Carson, which Karsyn respells, has never had its origin settled. It appears in the medieval records of Galloway in southwest Scotland, and the tidy gloss 'son of Carr' is a later attempt to explain it rather than a documented derivation. What is certain is the place and the family line, not the word behind them.
Carson (Scottish surname, Galloway) → Carson (American given name) → Karsyn
How it traveled
Carson began as a family name in Galloway, in southwest Scotland, and traveled the well-worn route through Ulster to North America, where Scots-Irish families carried it into the frontier states. American parents have been turning surnames into first names for a long time, and Carson made that jump like Mason, Harper and Riley did.
Keilani
the second element is lani, Hawaiian for 'sky, heaven, royal'; the first is read more than one way
Lani is settled and appears in dozens of Hawaiian names. The opening syllable is where readings diverge: some take it as kei, 'glory, dignity, splendor', giving something like 'heavenly glory'; others treat Keilani as a variant of Kailani, from kai, 'sea', giving 'sea and sky'. Both readings are defensible, and the name is short enough that either one fits it comfortably.
How it traveled
The building block here is old: lani carries the sense of sky, heaven and royalty in Hawaiian, and it closes a whole line of names — Leilani, Kalani, Noelani, Iolani among them. Hawaiian names traveled into wider American use across the twentieth century, Leilani leading the way through songs and film, and the -lani ending became familiar far from the islands.
Where a reading is contested the note says so — this page does not turn a guess into a fact. The chain is each name's recorded forms, oldest first; the story is its opening, told in full on the name's own page.
Out loud, and in short
Karsyn
KAR-sin
Stress on the first syllable, exactly as in Carson; the second syllable is light and often flattens to 'KAR-sn' in quick speech.
- Kars — The most common clip, used informally at home and among friends.
- Karsy — Affectionate family form, more often heard in the early years.
- Kay — Initial-based short form; also stands alone as a given name in its own right.
Keilani
kay-LAH-nee
In Hawaiian, ei is said like the ay in day, and every vowel gets its own beat. English speakers seeing it cold often try KEE-lah-nee or KYE-lah-nee, so expect to correct it now and then; once heard, it usually sticks.
- Lani — The most natural short form, and a given name in its own right in Hawaii and beyond.
- Kei — Informal, taken from the first syllable; often written Kay by people who have only heard it.
- Kiki — An affectionate family nickname rather than anything anyone would write down.
- Lanie — A softened, mostly American form of Lani, used within families.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Karsyn if you want…
- a name past its most crowded yearsKarsyn is stepping back from its peak
- a name with fewer syllablesKarsyn is 2 syllables to Keilani's 3
Choose Keilani if you want…
- a name on the way upup 28 places on the charts in five years
- a name with more sound in itKeilani runs 3 syllables, Karsyn 2
Each line is a measured difference between the two names — a rank, a count, a recorded form — never a judgement of either. Save the one that answers your question; it lands on your shortlist.
The trade-offs, name by name
Karsyn
Strengths
- Reads correctly on sight for most Americans, because the far more familiar Carson does the work of teaching the sound.
- Works unchanged for a boy or a girl — no adjustment, no separate form.
- Two syllables with a firm opening consonant, so it carries clearly across a playground and pairs easily with most surnames.
To consider
- The spelling will need saying out loud for life. Carson, Karson and Carsyn all exist, and most people default to the C version, so expect a lifetime of gentle correction on forms and coffee cups.
- Boys carry this spelling too, but they are the smaller share, so a boy named Karsyn may meet the assumption that the paperwork belongs to a girl. Nothing hard to fix — just a thing that will happen more than once.
- The K-and-y respelling belongs to a specific and recent stretch of American naming. It reads as current now; a few decades on it may quietly mark the era it came from, the way Tracy and Shannon do.
Keilani
Strengths
- Recognizable by association: the -lani ending is already familiar in the US through Leilani and Kalani, so the name rarely sounds unplaceable.
- Has a genuine, widely used short form in Lani, which also works as a standalone name.
- Every syllable is pronounced as written once the ay sound of ei is known — no silent letters, no hidden stress.
To consider
- Keilani, Kailani, Kalani and Keilana all circulate at once, so a child will spend a fair amount of life spelling it out and hearing the near-misses back.
- First encounters often produce KEE-lah-nee rather than kay-LAH-nee. Easy to fix, but it happens repeatedly, especially in writing-first situations like roll calls and appointments.
- It is a Hawaiian name with real cultural weight behind the lani element, which some families outside Hawaii want to think about before choosing it.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
With your last name
Say both in full. The notes are facts about letters and sound — a rhyme, a shared initial, the monogram — not a verdict on either name.
Type a last name to hear Karsyn and Keilani in full.
Weighing the whole shortlist? Run the full comparison — up to eight names with your last name, initials, classroom projections and a printable report.
Decide together
Nobody names a baby alone
Still torn between Karsyn and Keilani?
Put both to the vote.
One link to your partner, your parents, your sister. Each of them gets the two names, a one-tap answer and room to say why — and every reply lands in one place.
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More than two in the running? Settle it with a bracket or run the full comparison with your last name.
More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists that carry both names
Every list here names both Karsyn and Keilani — the same style, ranked by the same records.
Karsyn or Keilani — the short answers
- Which is more popular, Karsyn or Keilani?
- Karsyn, in 2025: Karsyn ranked #718 with 390 babies; Keilani ranked #727 with 383 babies.
- Which name is rising faster, Karsyn or Keilani?
- Keilani. Over the last five years Karsyn moved down 107 places; Keilani moved up 28 places.
- Which is the older name, Karsyn or Keilani?
- Karsyn entered the US charts in 1990; Keilani entered the US charts in 1975. On the American record, Keilani is the older name.
- How many people are named Karsyn and Keilani?
- About 9,300 people named Karsyn are estimated to be alive in the US today. About 5,300 people named Keilani are estimated to be alive in the US today.
- Will there be other Karsyns or Keilanis in the classroom?
- Karsyn will almost certainly be the only one in school. Keilani will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025. Votes are battle voters on this site, not the birth record. Data & methodology
Keep playing
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