Online hardness convertor

Hardness Conversion ASTM E140-97

from	HV: Vickers HardnessHB: Brinell Hardness 10 mm C-ball 3000 kgfHK: Knoop Hardness 500 gf and overHRA: Rockwell A Hardness 60 kgf.HRB: Rockwell B Hardness 100 kgf.HRC: Rockwell C Hardness 150 kgf.HRD: Rockwell D Hardness 100 kgf.HR15N: Rockwell Superficial 15 kgf.HR30N: Rockwell Superficial 30 kgf.HR45N: Rockwell Superficial 45 kgf.HSc: Scleroscope Hardness
to	HV: Vickers HardnessHB: Brinell Hardness 10 mm C-Ball 3000 kgfHRC: Rockwell C Hardness 150 kgf.