Kai vs Lasse
Kai and Lassecompared 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.
Norway · Boys
In 2025, Kai was ranked #282 and Lasse #237 among boys in Norway.
Kai and Lasse over time
Kai and Lasse appear together in 1 published list, across 81 years of shared records. Lasse held the stronger position in more years in 1 of them, Kai 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 Lasse 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 2020, Lasse moved ahead of Kai in Norway · Boys — #307 and #319 the year before became #369 and #154.
- Repeatedly exchanged positions
Kai and Lasse changed places 7 times in Norway · Boys between 1945 and 2025, ending at #282 and #237.
- Longest-running competitions
Kai and Lasse were both ranked in Norway · Boys for 81 years, from 1945 to 2025, ending at #282 and #237.
List by list
Norway · Boys81 shared years, 1945–2025
Kai held the stronger position in 36 of those years, Lasse in 45.
Highest recorded here: Kai #57 in 1976, Lasse #44 in 1988.
The order changed in 2020: Lasse moved ahead. In 2019 they stood at #307 and #319; by 2020 that had become #369 and #154.
Most recent shared year, 2025: Kai #282, Lasse #237.
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 | Lasse |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | 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 | NO |
| Most recent popularity observation | New South Wales, Australia · Boys #23 (2025) | Norway · Boys #237 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Kai has 1 syllable, compared with 2 for Lasse.
- Both names have recorded usage in NO.
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
Lasse
Popularity journey
First recorded1945
First recorded at #114 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1945–2025
Highest recorded position: #44 among boys in Norway, in 1988 (recorded 1945–2025).
Norway · Boys
Most recent2025
Most recently recorded at #237 among boys in Norway, in 2025.
Norway · Boys