Hardness Conversion Calculator to ISO 18265 and ASTM E140
With the hardness conversion calculator app developed by EMCO-TEST, you can easily convert hardness values into equivalent values on other hardness scales (such as Vickers, Brinell, Rockwell, and Knoop) and easily convert hardness values into tensile strength (Rm) according to EN ISO 18265 and ASTM E140 while on the go.
Functions / Hardness testing tools Integrated standards Download now for free
Why a hardness conversion calculator?
- Precise conversion of hardness values
Switch effortlessly between Rockwell, Vickers, Brinell, and Knoop methods—quickly, accurately, and in accordance with standards. - Easily determine the diagonal diameter
Calculate the average diagonal diameter precisely for a given hardness value—or display the corresponding hardness value directly from the diameter. - Clearly define tolerances
Reliably determine the permissible limit deviation of your hardness comparison plate based on the measured value entered. - Correction for curved test surfaces
For tests on curved parts, the app automatically calculates the correct adjustment value (Rockwell) or correction factor (Vickers). - In-depth expertise in hardness testing
Access compact, well-structured information on the Rockwell, Vickers, Brinell, and Knoop standard methods, as well as supplementary methods such as carbon, plastic, or Leeb testing.
Standards securely integrated
The hardness conversion calculator incorporates the relevant international standards in all functions. This ensures you always work precisely and in compliance with standards:
- Conversion of hardness values – ASTM E140, EN ISO 18265
- Tolerance – ISO 4545-2, ASTM E384, ASTM E92, ISO 6506, ASTM E10, ISO 6508, ASTM E18, ISO 6507
- Curvature correction – ISO 6507, ASTM E92, ISO 6508, ASTM E18
This means that every calculation – from Rockwell to Vickers, Brinell and Knoop to conversion – conforms to standards and is internationally comparable.
