Hardness Scale Converter

Professional hardness scale converter supporting all major hardness testing methods with ASTM E140 standard compliance for accurate material analysis and quality control.

Universal Hardness Converter

Convert between all major hardness scales with automatic material-specific adjustments.

Input Scale:

Input Value:

Material Type:

Test Method Standard:

Rockwell Hardness Analysis

Comprehensive Rockwell hardness analysis with load and indenter specifications.

Rockwell Scale:

Hardness Value:

Indenter Condition:

Test Temperature (°C):

Vickers Hardness Analysis

Vickers hardness calculation with load dependency and microhardness analysis.

Applied Load (kgf):

Diagonal Length (μm):

HV Value (if known):

Measurement Mode:

Brinell Hardness Analysis

Brinell hardness calculation with ball diameter and load optimization for different materials.

Ball Diameter (mm):

Applied Load (kgf):

Impression Diameter (mm):

HB Value (if known):

Rockwell Hardness

Best For: Hard materials (HRC 20-70)

Advantages: Fast, direct reading, suitable for production

Limitations: Surface sensitive, limited to specific materials

Applications: Heat-treated steels, carbides, ceramics

Vickers Hardness

Best For: Wide range of materials (HV 10-3000+)

Advantages: Universal scale, microhardness capability

Limitations: Requires optical measurement, slower

Applications: Research, thin coatings, case studies

Brinell Hardness

Best For: Soft to medium hard materials (HB 1-650)

Advantages: Large impression, good for rough surfaces

Limitations: Large indentation, not for thin specimens

Applications: Castings, forgings, annealed materials

Shore Hardness

Best For: Elastomers, plastics, rubbers

Advantages: Portable, non-destructive, quick

Limitations: Limited to soft materials, temperature sensitive

Applications: Rubber components, gaskets, polymers

Hardness Conversion Reference Matrix

Approximate conversions based on ASTM E140 for carbon and low-alloy steels:

HRC	HRA	HRB	HV	HB	Tensile Strength (MPa)