HRC · HV · HB · HRB · tensile

Hardness Conversion Calculator

Convert hardness between Rockwell C, Vickers and Brinell scales, with approximate tensile strength — plus the full reference table below (equivalent to ASTM E140 values for non-austenitic steels).

Scale conversion

HRC ↔ HV ↔ HB

HRC ↔ HV ↔ HB conversion chart

HRCVickers HVBrinell HBHRBTensile strength (approx.)
6894097
6790095
6686592
6583273982
6480072280
6377270577
6274668874
6172067071
60697654682435 MPa / 353 ksi
59674634662340 MPa / 339 ksi
58653615642245 MPa / 326 ksi
57633595622165 MPa / 314 ksi
56613577602085 MPa / 302 ksi
55595560582020 MPa / 293 ksi
54577543561950 MPa / 283 ksi
53560525541885 MPa / 273 ksi
52544512521825 MPa / 265 ksi
51528496501765 MPa / 256 ksi
50513481481705 MPa / 247 ksi
49498469471660 MPa / 241 ksi
48484455451600 MPa / 232 ksi
47471443431555 MPa / 226 ksi
46458432411510 MPa / 219 ksi
45446421401470 MPa / 213 ksi
44434409381430 MPa / 207 ksi
43423400361390 MPa / 202 ksi
42412390351350 MPa / 196 ksi
41402381331320 MPa / 191 ksi
40392371311280 MPa / 186 ksi
39382362301250 MPa / 181 ksi
38372353281215 MPa / 176 ksi
37363344261180 MPa / 171 ksi
36354336251150 MPa / 167 ksi
35345327231115 MPa / 162 ksi
34336319211090 MPa / 158 ksi
33327311201060 MPa / 154 ksi
32318301181030 MPa / 149 ksi
31310294161005 MPa / 146 ksi
3030228615980 MPa / 142 ksi
2929427713950 MPa / 138 ksi
2828627112930 MPa / 135 ksi
2727926410905 MPa / 131 ksi
262712588880 MPa / 128 ksi
252642537860 MPa / 125 ksi
242572475840 MPa / 122 ksi
232512434825 MPa / 120 ksi
222452402.5810 MPa / 117 ksi
212402311790 MPa / 115 ksi
20235226775 MPa / 112 ksi

Frequently asked questions

Are hardness conversions exact?
No — conversions are empirical and material-dependent. Tables like ASTM E140 are valid for non-austenitic steels; treat converted values as approximations, and never convert for specification acceptance without the standard's permission.
What is the approximate tensile strength from hardness?
For carbon and alloy steels, tensile strength (MPa) ≈ 3.3–3.5 × Brinell hardness. HRC 40 (≈ HB 371) corresponds to roughly 1280 MPa or 185 ksi.

Related calculators