Arlo vs Kai
Arlo and Kaicompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
England and Wales · Boys
In 2024, Arlo was ranked #15 and Kai #72 among boys in England and Wales.
Scotland · Boys
In 2024, Arlo was ranked #18 and Kai #56 among boys in Scotland.
New South Wales, Australia · Boys
In 2025, Arlo was ranked #47 and Kai #23 among boys in New South Wales, Australia.
Republic of Ireland · Boys
In 2025, Arlo was ranked #54 and Kai #34 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2024, Arlo was ranked #45 and Kai #69 among boys in Northern Ireland.
England and Wales · Girls
In 2024, Arlo was ranked #1894 and Kai #4843 among girls in England and Wales.
Arlo and Kai over time
Arlo and Kai appear together in 5 published lists, across 75 years of shared records. Kai held the stronger position in more years in 4 of them, Arlo in 1.
The order between them changed and held in 3 of those lists — a change in that published list, never a claim that one name displaced the other.
Kai reached its own highest recorded position earlier in 3 of those lists, and Arlo in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- One moved ahead of the other
In 2016, Arlo moved ahead of Kai in England and Wales · Boys — #102 and #86 the year before became #49 and #87.
- Repeatedly exchanged positions
Arlo and Kai changed places 6 times in New South Wales, Australia · Boys between 2015 and 2025, ending at #47 and #23.
- Peaked in the same years
Both reached their highest recorded position in New South Wales, Australia · Boys within 2 years — Arlo #19 in 2023, Kai #20 in 2023.
List by list
England and Wales · Boys26 shared years, 1999–2024
Arlo held the stronger position in 9 of those years, Kai in 17.
Highest recorded here: Arlo #14 in 2023, Kai #56 in 2003.
The order changed in 2016: Arlo moved ahead. In 2015 they stood at #102 and #86; by 2016 that had become #49 and #87.
Most recent shared year, 2024: Arlo #15, Kai #72.
Republic of Ireland · Boys17 shared years, 2009–2025
Arlo held the stronger position in 0 of those years, Kai in 17.
Highest recorded here: Arlo #48 in 2024, Kai #30 in 2024.
The order between them never changed and held in this list.
Most recent shared year, 2025: Arlo #54, Kai #34.
Northern Ireland · Boys13 shared years, 2011–2024
Arlo held the stronger position in 5 of those years, Kai in 8.
Highest recorded here: Arlo #40 in 2023, Kai #52 in 2021.
The order changed in 2022: Arlo moved ahead. In 2021 they stood at #62 and #52; by 2022 that had become #62 and #67.
Most recent shared year, 2024: Arlo #45, Kai #69.
New South Wales, Australia · Boys11 shared years, 2015–2025
Arlo held the stronger position in 5 of those years, Kai in 6.
Highest recorded here: Arlo #19 in 2023, Kai #20 in 2023.
The order between them never changed and held in this list.
Most recent shared year, 2025: Arlo #47, Kai #23.
England and Wales · Girls8 shared years, 2016–2024
Arlo held the stronger position in 7 of those years, Kai in 1.
Highest recorded here: Arlo #1469 in 2023, Kai #3117 in 2020.
The order changed in 2018: Arlo moved ahead. In 2017 they stood at #4096 and #3214; by 2018 that had become #2340 and #4684.
Most recent shared year, 2024: Arlo #1894, Kai #4843.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Arlo | Kai |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Meaning uncertain — likely derived by Edmund Spenser from the real Irish place name Aherlow ('between two highlands') for the fictional Arlo Hill in The Faerie Queene (1590). | Not yet recorded |
| Origin | Irish (place name origin, via literary adaptation) | Not yet recorded |
| Pronunciation | /ˈɑɹ.loʊ/ | Not yet recorded |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO |
| Most recent popularity observation | New South Wales, Australia · Boys #47 (2025) | New South Wales, Australia · Boys #23 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Arlo has a recorded origin (Irish (place name origin, via literary adaptation)); Kai does not have one recorded yet.
- Arlo has 2 syllables, compared with 1 for Kai.
- A meaning is recorded for Arlo; Kai doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE.
How each name got here
Arlo
Popularity journey
First recorded1999
First recorded at #2943 among boys in England and Wales in 1999 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Boys
Highest recorded2013–2023
Highest recorded position: #10 among boys in New Zealand, in 2017 (recorded 2013–2023).
New Zealand · Boys
Most recent2025
Most recently recorded at #47 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys
Kai
Popularity journey
First recorded1945
First recorded at #76 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded2002–2025
Highest recorded position: #20 among boys in New South Wales, Australia, in 2023 (recorded 2002–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #23 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys