| Subject | English | Japanese |
| tech. | equipment utilization factor | 設備使用率 (setsubi-shiyōritsu) |
| light. | reduced utilization factor of an installation, for a reference surface | 換算照明率 |
| phys. | thermal utilization factor | 熱中性子利用率 (ねつちゅうせいし・りようりつ) |
| light. | utilization factor | 照明率 (shōmeiritsu) |
| radiol. | utilization factor | 〔設備などの〕利用率 (りようりつ) |
| gen. | n utilization factor | 利用率 (りようりつ) |