Question 1

What is 66 Mohs in HRC?

Accepted Answer

66 Mohs = 0.65 HRC. Use the converter on this page to convert to other hardness units instantly.

Question 2

How do you convert Mohs to HRC?

Accepted Answer

Formula (approximate): 1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140. Multiply your Mohs value by the appropriate factor to get HRC, or use the interactive converter above.

Question 3

What is 0.65 HRC in Mohs?

Accepted Answer

0.65 HRC = 66.3 Mohs.

Mohs	HRC
51 Mohs	0.5
56 Mohs	0.55
61 Mohs	0.6
66	0.65
71 Mohs	0.7
76 Mohs	0.75
81 Mohs	0.79

66 Mohs to HRC

Formula (approximate)