Henry vs Kai
Henry 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.
New South Wales, Australia · Boys
In 2025, Henry was ranked #6 and Kai #23 among boys in New South Wales, Australia.
England and Wales · Boys
In 2024, Henry was ranked #14 and Kai #72 among boys in England and Wales.
Republic of Ireland · Boys
In 2025, Henry was ranked #76 and Kai #34 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2024, Henry was ranked #45 and Kai #69 among boys in Northern Ireland.
Norway · Boys
In 2025, Henry was ranked #50 and Kai #282 among boys in Norway.
Scotland · Boys
In 2024, Henry was ranked #95 and Kai #56 among boys in Scotland.
Henry and Kai over time
Henry and Kai appear together in 5 published lists, across 187 years of shared records. Henry held the stronger position in more years in 4 of them, Kai in 1.
The order between them changed and held in 2 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, Henry in 1. 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 2019, Kai moved ahead of Henry in Republic of Ireland · Boys — #81 and #84 the year before became #83 and #65.
- Repeatedly exchanged positions
Henry and Kai changed places 4 times in Northern Ireland · Boys between 1998 and 2024, ending at #45 and #69.
- Closest over the longest run
Across 29 shared years in England and Wales · Boys, Henry and Kai averaged 47.9 places apart, ending at #14 and #72.
- Longest-running competitions
Henry and Kai were both ranked in Norway · Boys for 81 years, from 1945 to 2025, ending at #50 and #282.
- Peaked in the same years
Both reached their highest recorded position in New South Wales, Australia · Boys within 2 years — Henry #4 in 2023, Kai #20 in 2023.
List by list
Norway · Boys81 shared years, 1945–2025
Henry held the stronger position in 26 of those years, Kai in 55.
Highest recorded here: Henry #50 in 2025, Kai #57 in 1976.
The order changed in 2002: Henry moved ahead. In 2001 they stood at #412 and #264; by 2002 that had become #309 and #411.
Most recent shared year, 2025: Henry #50, Kai #282.
England and Wales · Boys29 shared years, 1996–2024
Henry held the stronger position in 29 of those years, Kai in 0.
Highest recorded here: Henry #10 in 2021, Kai #56 in 2003.
The order between them never changed and held in this list.
Most recent shared year, 2024: Henry #14, Kai #72.
Republic of Ireland · Boys28 shared years, 1997–2025
Henry held the stronger position in 15 of those years, Kai in 13.
Highest recorded here: Henry #75 in 2016, Kai #30 in 2024.
The order changed in 2019: Kai moved ahead. In 2018 they stood at #81 and #84; by 2019 that had become #83 and #65.
Most recent shared year, 2025: Henry #76, Kai #34.
Northern Ireland · Boys27 shared years, 1998–2024
Henry held the stronger position in 16 of those years, Kai in 10.
Highest recorded here: Henry #22 in 2023, Kai #52 in 2021.
The order between them never changed and held in this list.
Most recent shared year, 2024: Henry #45, Kai #69.
New South Wales, Australia · Boys22 shared years, 2002–2025
Henry held the stronger position in 21 of those years, Kai in 1.
Highest recorded here: Henry #4 in 2023, Kai #20 in 2023.
The order between them never changed and held in this list.
Most recent shared year, 2025: Henry #6, Kai #23.
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 | Henry | Kai |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Home ruler, estate ruler. | Not yet recorded |
| Origin | Germanic, via Old French Henri | Not yet recorded |
| Pronunciation | /ˈhɛnɹi/ | Not yet recorded |
| Syllables | 2 | 1 |
| Common variants / nicknames | Harry, Hal, Heinrich, Henri | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO |
| Most recent popularity observation | New South Wales, Australia · Boys #6 (2025) | New South Wales, Australia · Boys #23 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | high | medium |
What the data shows
- Henry has a recorded origin (Germanic, via Old French Henri); Kai does not have one recorded yet.
- Henry has 2 syllables, compared with 1 for Kai.
- A meaning is recorded for Henry; Kai doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO.
- The available evidence gives Henry a "high" Data Confidence level and Kai a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
How each name got here
Henry
Popularity journey
First recorded1945
First recorded at #102 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1993–2025
Highest recorded position: #4 among boys in New South Wales, Australia, in 2023 (recorded 1993–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #6 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