Across the UFC record, fights are longest at Women's Flyweight at 12:37 (278 fights) and shortest at Heavyweight at 8:47 (763 fights).
| Division | Average length | Total time | Fights |
|---|---|---|---|
| Lightweight | 10:30 | 253 hours | 1,443 |
| Welterweight | 10:42 | 248 hours | 1,388 |
| Middleweight | 10:03 | 191 hours | 1,143 |
| Featherweight | 11:09 | 161 hours | 868 |
| Bantamweight | 11:25 | 148 hours | 778 |
| Heavyweight | 8:47 | 112 hours | 763 |
| Light Heavyweight | 9:20 | 117 hours | 751 |
| Flyweight | 11:39 | 82 hours | 423 |
| Women's Strawweight | 12:37 | 80 hours | 379 |
| Women's Flyweight | 12:37 | 58 hours | 278 |
| Women's Bantamweight | 12:18 | 51 hours | 249 |