121.5 Mohs = 1.19 HRC
| Mohs | HRC |
|---|---|
| 106.5 Mohs | 1.04 |
| 111.5 Mohs | 1.09 |
| 116.5 Mohs | 1.14 |
| 121.5 | 1.19 |
| 126.5 Mohs | 1.24 |
| 131.5 Mohs | 1.29 |
| 136.5 Mohs | 1.34 |
121.5 Mohs = 1.19 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