Kai vs Trudi
Kai and Trudicompared 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 · Girls
In 2010, Kai was ranked #5707 and Trudi #4688 among girls in England and Wales.
Kai and Trudi over time
Kai and Trudi appear together in 1 published list, across 13 years of shared records. Kai held the stronger position in more years in 1 of them, Trudi in 0.
The order between them changed and held in one 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 1 of those lists, and Trudi 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.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Girls within 2 years — Kai #1126 in 1997, Trudi #1107 in 1999.
List by list
England and Wales · Girls13 shared years, 1996–2010
Kai held the stronger position in 11 of those years, Trudi in 2.
Highest recorded here: Kai #1126 in 1997, Trudi #1107 in 1999.
The order changed in 2010: Trudi moved ahead. In 2009 they stood at #2326 and #3422; by 2010 that had become #5707 and #4688.
Most recent shared year, 2010: Kai #5707, Trudi #4688.
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 | Kai | Trudi |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | male | female |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 1 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO | GB-ENW, IE |
| Most recent popularity observation | New South Wales, Australia · Boys #23 (2025) | England and Wales · Girls #5730 (2015) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 60/100 |
| Data Confidence | medium | medium |
What the data shows
- Kai has 1 syllable, compared with 2 for Trudi.
- Both names have recorded usage in GB-ENW, IE.
How each name got here
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
Trudi
Popularity journey
First recorded1971
First recorded at #466 among girls in Republic of Ireland in 1971 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1971–2007
Highest recorded position: #388 among girls in Republic of Ireland, in 1986 (recorded 1971–2007).
Republic of Ireland · Girls
Most recent2015
Most recently recorded at #5730 among girls in England and Wales, in 2015.
England and Wales · Girls