
Progression of Official World Indoor Record
Men, 400m
| Result | Name | Country | DOB | Comp | Date | Age | Record life | |
| 44.52 | Michael Norman | USA | 3 Dec 1997 | NCAA | College Station TX | 10 Mar 2018 | 20 years 97 days | 2 years 244 days |
| 45.58 | Chris Brown | BAH | 15 Oct 1978 | WC | Sopot | 8 Mar 2014 | 35 years 144 days | 4 years 2 days |
| 44.57 | Kerron Clement | USA | 31 Oct 1985 | NCAA | Fayetteville AR | 12 Mar 2005 | 19 years 132 days | 8 years 361 days |
| 45.41 | Thomas Schönlebe | GER | 6 Aug 1965 | Wien | 9 Feb 1996 | 30 years 187 days | 9 years 31 days | |
| 44.63 | Michael Johnson | USA | 13 Sep 1967 | Atlanta GA | 4 Mar 1995 | 27 years 172 days | 342 days | |
| 44.97 | Michael Johnson | USA | 13 Sep 1967 | Reno NV | 10 Feb 1995 | 27 years 150 days | 22 days | |
| 45.02 | Danny Everett | USA | 1 Nov 1966 | Stuttgart | 2 Feb 1992 | 25 years 93 days | 3 years 8 days | |
| 45.05 | Thomas Schönlebe | GER | 6 Aug 1965 | Sindelfingen | 5 Feb 1988 | 22 years 183 days | 3 years 362 days |