| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Ferenczi Sándor (2015)BVSC-Zugló | 46.64R:0.76 | - | 128 | |
| 2 | 4 | Vesztergom Dániel (2014)Darnyi Tamás SC | 48.69R:0.62 | 02.05 | 113 | |
| 3 | 7 | Zsidai Dániel (2016)FTC | 48.86R:0.88 | 02.22 | 111 | |
| 4 | 5 | Molnár Erik Lehel (2015)FTC | 49.63R:0.89 | 02.99 | 106 | |
| 5 | 3 | Boros Teodor (2015)BVSC-Zugló | 49.88R:0.99 | 03.24 | 105 | |
| 6 | 8 | Büki Norbert János (2016)FTC | 50.45R:0.74 | 03.81 | 101 | |
| 7 | 2 | Kónya Kristóf Noé (2015)BVSC-Zugló | 50.59R:0.86 | 03.95 | 100 | |
| 8 | 1 | Tordai Dániel (2017)Kőbánya Sport Club | 51.89R:0.79 | 05.25 | 93 |