For Mechanical Engineers

Engineering Precision,
Right in Your Pocket.

Strictly compliant with ASTM E140 & ISO 18265 standards. Convert HRC, HV, HB and 11+ scales with absolute confidence—even offline.

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CONVERTER
45.0
HRC - Rockwell C
446 HV
423 HBW
1485 MPa

Why Engineers Choose Hardness

Designed for the workshop floor and the design lab. We cut out the noise and focus on accurate data.

Standard Compliant

Data sourced strictly from ASTM E140 and ISO 18265 tables. No unreliable algorithms or approximations.

100% Offline

Deep inside a factory or in a shielded lab? No problem. Hardness works completely locally on your device.

Tensile Strength

Exclusive feature: Estimate steel tensile strength (MPa) instantly based on Vickers hardness readings.

Supports 11+ Hardness Scales

HRC HV HBW HRA HRB HRD HS HR15N

Also includes smart alerts for values "outside standard range" to ensure your engineering rigour.