Head to head · Girls' names
Kailani vs Kaylee
#253 vs #255 in 2025
Kailani is a whisker ahead (#253 vs #255 in 2025), but the curves point different ways: Kailani is holding its place on the charts, Kaylee is stepping back from its peak.
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
The tape is even: Kailani and Kaylee each lead 3 measures of 6.
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
- 1940s: Kailani —, Kaylee #4691 — Kaylee higher
- 1950s: Kailani —, Kaylee #5301 — Kaylee higher
- 1960s: Kailani —, Kaylee #4719 — Kaylee higher
- 1970s: Kailani —, Kaylee #3809 — Kaylee higher
- 1980s: Kailani #8676, Kaylee #1159 — Kaylee higher
- 1990s: Kailani #5236, Kaylee #143 — Kaylee higher
- 2000s: Kailani #1903, Kaylee #47 — Kaylee higher
- 2010s: Kailani #834, Kaylee #63 — Kaylee higher
- 2020s: Kailani #256, Kaylee #179 — Kaylee higher
Kaylee stood higher in every recorded decade — 9 of 9.
Rank by decade
| Decade | Kailani | Kaylee |
|---|---|---|
| 1940s | — | #4691 |
| 1950s | — | #5301 |
| 1960s | — | #4719 |
| 1970s | — | #3809 |
| 1980s | #8676 | #1159 |
| 1990s | #5236 | #143 |
| 2000s | #1903 | #47 |
| 2010s | #834 | #63 |
| 2020s | #256 | #179 |
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
Kailani
sea and sky, from Hawaiian kai (sea) and lani (sky, heaven, also royal, chiefly)
The two elements are not in doubt. How they are joined in English is looser: you will see it rendered as "sea and sky," "heavenly sea" and "sea of heaven," all fair readings of the same compound, since Hawaiian names are often meant to hold more than one sense at once.
kai (Hawaiian, sea) → lani (Hawaiian, sky, heaven) → Kailani
How it traveled
Hawaiian naming has long worked by composition — an inoa can be made new from meaningful words rather than inherited from a list, which is why kai and lani recombine so freely across generations. Hawaiian names traveled to the mainland US in the twentieth century largely through music and film; "Sweet Leilani," written by Harry Owens and recorded by Bing Crosby in the 1930s, carried the lani element into American ears well before Kailani itself appeared in national records.
Kaylee
Not established
Two serious readings compete. The first treats it as a compound: Kay (a short form of Katherine) plus the -lee or -leigh ending borrowed from English surnames, which is how Marillion's Fish described inventing the spelling Kayleigh — from the names Kay and Leigh. The second reads it as an English respelling of Irish names and surnames in the Caol- family, where the element caol means slender, and which reach English as Keeley and Keelin. Neither reading has won, and the name is used widely by parents who hold to one, the other, or neither.
How it traveled
Kaylee is a modern English-language name, and unlike most entries in a book like this it has no ancient line behind it. Its parts are old — Kay has stood alone as a woman's name for well over a century, and -lee and -leigh come from English place-name surnames meaning a clearing or meadow — but the joining of them is recent.
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
Kailani
kye-LAH-nee
In Hawaiian, the vowel pair ai says "eye," so the first syllable rhymes with sky. Many American speakers default to kay-LAH-nee instead, which is why the Kaylani spelling exists; both are heard on the mainland.
- Kai — The most common short form; also a full given name in its own right in the US, used for boys and girls alike.
- Lani — Stands alone as a Hawaiian given name as well as a short form; informal in everyday use.
- Kay — An English-style clipping, more likely from adults than from classmates.
- Kiki — A playful family-level nickname rather than one anyone would use on a form.
Kaylee
KAY-lee
Two syllables, stress on the first. Kaylee, Kayleigh and Kaylie are all said identically, which is why the spellings get confused with one another.
- Kay — The most-used short form, and a full given name in its own right, still well represented among older generations.
- Kay-Kay — Informal and mostly used within families and among children.
- Lee — Occasional, drawn from the second half; also a stand-alone name given to both boys and girls.
- Kaye — A spelling of the same short form, more often seen as a middle name.
One short form, two names
- Kailani and Kaylee both shorten to Kay.
Short forms as recorded on each name’s own page. This is here so it is a decision rather than a discovery.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Kailani if you want…
- a name on the way upup 29 places on the charts in five years
- a name with more sound in itKailani runs 3 syllables, Kaylee 2
- a name that ages quietlyan estimated 40% chance of feeling dated by 2040, against 80% for Kaylee
Choose Kaylee if you want…
- a name past its most crowded yearsKaylee is stepping back from its peak
- a name with fewer syllablesKaylee is 2 syllables to Kailani's 3
- a name that feels very nowKaylee is stepping back from its peak
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
Kailani
Strengths
- The meaning is transparent in a living language — kai and lani are ordinary Hawaiian words, not a reconstructed guess.
- Two ready-made short forms, Kai and Lani, that both work as standalone names on their own.
- Sits inside a familiar family of names — Leilani, Kalani, Lani — so it is recognizable even where it is rare.
To consider
- The first syllable is genuinely ambiguous to American ears: kye or kay. Expect to correct it, gently and often, for life.
- Competing spellings — Kaylani, Kylani — mean the name will sometimes be written back to you the other way after you have said it aloud.
- This is a Hawaiian name with a real cultural home. Away from the islands it is worth being able to say where it comes from and what it means, which is a small thing to carry and an easy one.
Kaylee
Strengths
- Reads exactly as it sounds to any English speaker — no pronunciation coaching needed, at school or over the phone.
- Both halves work as names on their own: Kay has a long independent record, and Lee is used for boys and girls alike.
- In use across the United States, Britain, Ireland and the Netherlands, so it travels through English-speaking and Dutch-speaking countries without adjustment.
To consider
- The spelling will need repeating for life. Kayleigh, Kaylie, Kaleigh, Caylee and Kailey are all in circulation, and people who hear the name have no way of guessing which one you mean.
- Most people carrying this name today are teenagers and young adults, which gives it a fairly specific generational sound — closer to a young woman's name than a baby's, at least for now.
- No settled meaning to hand a curious child. What you can tell them is real and quite interesting: the name was assembled in living memory rather than inherited.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
How each is likely to age
Kailani
40%chance Kailani feels dated by 2040
Kailani sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
Kaylee
80%chance Kaylee feels dated by 2040
Kaylee is coming down from a big peak (#26 in 2009). This is the stretch of the cycle where a name starts to sound like the decade it ruled.
A reading of where each name sits on the long naming cycle — computed, not measured, and explained on the data page.
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 Kailani and Kaylee in full.
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Decide together
Nobody names a baby alone
Still torn between Kailani and Kaylee?
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 head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists these names appear on
- Water names that flow
- Hawaiian names full of ocean light
- Names ending in -i
- Beloved classics quietly disappearing
- all guides
Where Kailani and Kaylee each sit in the library — alternatives in the same style, ranked by the same records.
Kailani or Kaylee — the short answers
- Which is more popular, Kailani or Kaylee?
- Kailani, in 2025: Kailani ranked #253 with 1,215 babies; Kaylee ranked #255 with 1,205 babies.
- Which name is rising faster, Kailani or Kaylee?
- Kailani. Over the last five years Kailani moved up 29 places; Kaylee moved down 138 places.
- Which is the older name, Kailani or Kaylee?
- Kailani entered the US charts in 1980; Kaylee entered the US charts in 1943. On the American record, Kaylee is the older name.
- How many people are named Kailani and Kaylee?
- About 12,500 people named Kailani are estimated to be alive in the US today. About 139,000 people named Kaylee are estimated to be alive in the US today.
- Do Kailani and Kaylee share a nickname?
- Yes — both shorten to Kay, so in a house with both names the short form would not say which child is meant.
US figures from the Social Security Administration, 1880–2025. Votes are battle voters on this site, not the birth record. Data & methodology
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