| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Elfsborg | Svenska Cupen | 4 | 1 | 0 | 1 | 0 | – |
| 2024/2025 | Elfsborg | Svenska Cupen | 3 | 0 | 0 | 0 | 0 | – |
| 2024 | Fredrikstad | NM Cup | 6 | 1 | 0 | 0 | 0 | – |
| 2023 | Vikingur Reykjavik | Reykjavik Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2022 | Vikingur Reykjavik | Icelandic Cup | 5 | 0 | 0 | 0 | 0 | – |
| 2022 | Vikingur Reykjavik | Super Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2022 | Vikingur Reykjavik | League Cup | 7 | 0 | 0 | 2 | 0 | – |
| 2022 | Vikingur Reykjavik | Reykjavik Cup | 3 | 0 | 0 | 1 | 0 | – |
| 2021 | Vikingur Reykjavik | Icelandic Cup | 4 | 0 | 0 | 1 | 0 | – |
| 2021 | Vikingur Reykjavik | League Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2020 | Vikingur Reykjavik | Super Cup | 1 | 0 | 0 | 1 | 0 | – |
| 2019 | Vikingur Reykjavik | Icelandic Cup | 4 | 0 | 0 | 0 | 0 | – |
| 2019 | Vikingur Reykjavik | League Cup | 1 | 1 | 0 | 0 | 0 | – |
| Total | 43 | 3 | 0 | 6 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| - | Fredrikstad | Elfsborg | Transfer | |
| 02 sept 2023 | Vikingur Reykjavik | Fredrikstad | Transfer | |
| - | Heerenveen | Vikingur Reykjavik | Free agent | |
| - | Vikingur Reykjavik | Heerenveen | Transfer |
J. Magnusson career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.