Caelum
Masculine · “sky”
Caelum is the sky in Latin, and it is also a constellation — a chisel, named by an eighteenth-century astronomer who filled the southern sky with workshop tools.
How old is the name Caelum?
Caelum first appears in US birth records in 1995 — 30 years ago. The typical Caelum is a kid of about 6 — this name's wave is very recent. About 900 people named Caelum are estimated to be alive in the US today.
When was the name Caelum most popular?
Caelum peaked in 2025, reaching #1688 nationally. Today it ranks #1688, exactly where it peaked. See the whole 2025 chart.
Lists built from the same records:
Where it comes from
From caelum to Caelum
The story of Caelum
Nicolas-Louis de Lacaille mapped the southern sky from the Cape in 1751–52 and named fourteen new constellations after instruments and tools — the chisel, the air pump, the microscope, the clock. Caelum is one of them, and the faintest. The name appears in the American registers in the 2010s and is in current use.
Meaning
sky, heaven; chisel
The Latin caelum means both 'sky' and 'chisel' — two separate words that fell together in spelling. Lacaille named the constellation Caelum for the engraver's chisel in the 1750s. The celestial sense gives English celestial and ceiling. Both meanings are documented.
How the name formed
- caelum
- Caelum
Related forms: Caelum · Celum · Cielo
Pronouncing Caelum
KY-lum
Two syllables, stress on the first, in classical Latin. English speakers often say SEE-lum, following the soft c.
Nicknames for Caelum
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1995
- Most boys named
- 202597 — the highest on record
- Peak rank
- #1688reached in 2025
- Change vs 2024
- +29.3%97 in 2025, from 75
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Caelum in other languages
The same name elsewhere
- Caelum in Latin — same name
- Celum in English — spelling variant
- Cielo in Italian — related form
Strongest US states over the last decade: California, Texas, New York.
Caelums among us
people named Caelum are estimated to be alive in the US today
About 1 boy in 17,609 born in 2025 was named Caelum
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Caelum
- #1688
- Caelum on the 2025 chart
- #806
- counting every spelling
The SSA counts spellings, not names. Caelum went to 97 boys in 2025, but Kaelum and Caellum are the same name said out loud. Together the 3 spellings went to 122, which makes it the 806th most-given boys’ name of the year — 882 places above the chart.
- Caelum97
- Kaelum15
- Caellum10
About 1 boy in 14,001 born in 2025 was given one of these spellings — against 1 in 17,609 for Caelum itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
The Sander test
Every popular name lives one long story — a climb, a peak, a slow settling back. Caelum's later chapters haven't been written yet, so we borrowed them: Sander climbed just as high around 1937, and its whole arc is on record. Line the two peaks up, and Sander's path sketches the road Caelum is walking now.
Caelum is climbing fast right now. Steep climbs tend to come with steep descents — the quicker a name arrives, the more firmly it belongs to its moment.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Caelum is headed
Caelum should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
Medium confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Caelum beside its neighbors
The names ranked closest to Caelum in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- The sky meaning is concrete and gives English ceiling and celestial.
- Lacaille's workshop-tool constellations are a genuinely charming piece of history.
- Cael and Cal are two short forms, both with real use.
- The initial consonant splits between classical and English readings.
- The ae will need dictating every time.
- It is very new as a given name.
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What they receive
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Caelum
Masculine · #1688 in the U.S.
Frequently asked
- How many Caelums are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 900 people named Caelum are estimated to be alive in the US today.
- How do you spell Caelum?
- Caelum is the most-used spelling in US records — 97 of the 122 babies given the name in 2025. The others recorded are Kaelum and Caellum.
- How popular is the name Caelum in 2025?
- Caelum ranks #1688 among US boy names in 2025, with 97 babies given the name.
- How rare is the name Caelum?
- About 1 in every 17,609 US boys born in 2025 was named Caelum — 97 in all.
- Will my child share the name Caelum with classmates?
- Caelum will almost certainly be the only one in school.
Ranked beside Caelum
Names sitting at a similar level of popularity right now.
Yaman#1688 · Ransom#1688 · Alister#1688 · Darrell#1688 · Viggo#1688 · Raylen#1688 · Meyer#1688 · Naim#1688
Looking for what else is popular rather than what resembles Caelum? See the current top 100.
Choosing between Caelum and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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