| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods | Missed | Classes |
| Total | 758 of 2,214 | 66% | 106 of 214 | 50% | 101 | 172 | 135 | 449 | 22 | 65 | 5 | 14 |
| RubyNKF | | 64% | | 43% | 55 | 70 | 77 | 243 | 3 | 9 | 0 | 1 |
| RubyNKF.MimeConverter | | 0% | | 0% | 12 | 12 | 31 | 31 | 5 | 5 | 1 | 1 |
| Option | | 58% | | 75% | 3 | 15 | 4 | 22 | 2 | 11 | 0 | 1 |
| RubyNKF.Converter | | 71% | | 50% | 7 | 11 | 10 | 37 | 1 | 4 | 0 | 1 |
| Options | | 89% | | 68% | 8 | 23 | 7 | 41 | 0 | 9 | 0 | 1 |
| RubyNKF.INVOKER.s.2.0.nkf | | 0% | n/a | 2 | 2 | 0 | 0 | 2 | 2 | 1 | 1 | |
| Command | | 84% | | 83% | 4 | 12 | 3 | 16 | 2 | 6 | 0 | 1 |
| RubyNKF.INVOKER.s.1.0.guess | | 0% | n/a | 2 | 2 | 0 | 0 | 2 | 2 | 1 | 1 | |
| RubyNKF.INVOKER.s.1.0.guess2 | | 0% | n/a | 2 | 2 | 0 | 0 | 2 | 2 | 1 | 1 | |
| RubyNKF.INVOKER.s.1.0.guess1 | | 0% | n/a | 2 | 2 | 0 | 0 | 2 | 2 | 1 | 1 | |
| CommandParser | | 89% | | 81% | 3 | 11 | 3 | 27 | 0 | 3 | 0 | 1 |
| RubyNKF.NKFCharset | | 98% | n/a | 1 | 6 | 0 | 22 | 1 | 6 | 0 | 1 | |
| RubyNKF.DefaultConverter | | 100% | n/a | 0 | 2 | 0 | 7 | 0 | 2 | 0 | 1 | |
| NKFLibrary | 100% | n/a | 0 | 2 | 0 | 3 | 0 | 2 | 0 | 1 |