123.5 Mohs = 1.21 HRC
| Mohs | HRC |
|---|---|
| 108.5 Mohs | 1.06 |
| 113.5 Mohs | 1.11 |
| 118.5 Mohs | 1.16 |
| 123.5 | 1.21 |
| 128.5 Mohs | 1.26 |
| 133.5 Mohs | 1.31 |
| 138.5 Mohs | 1.36 |
123.5 Mohs = 1.21 HRC
1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140