Hardness Unit Converter

Kei Suefuji · Utilities

4.0 7 ratings $1.99

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What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Sep 15, 2026
New version 2.5.0 → 2.6.0

Modified the internal processing for screen display.

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 71% 5
4★ 0% 0
3★ 0% 0
2★ 14% 1
1★ 14% 1

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About

The Hardness Unit Converter application converts the hardness into 12 types of units. The units to be converted by this application are Vickers hardness HV, Brinell hardness HBS, HBW, Rockwell hardness HRA, HRB, HRC, HRD, Rockwell superficial hardness HR 15 N, HR 30 N, HR 45 N, Shore hardness HS, and tensile strength MPa. Simply input the hardness value and select the unit of hardness with the unit selection button, it will be converted into 12 types of units. This application refers to the approximate conversion table of ASTM E 140 Table 1 and JIS, and data not in the table is calculated by polynomial approximation. Values ​​in the range not normally used are indicated by ().

What's new · 2.6.0

Modified the internal processing for screen display.

Details

DeveloperKei Suefuji
ReleasedJul 2018
UpdatedJan 2026
Version2.6.0
Size8.8 MB
RequiresiOS 12.0 or later
Age rating4+
LanguagesChinese, Dutch, English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Thai, Turkish
Price$1.99
Categories UtilitiesProductivity
Bundle IDcom.gmail.a.kikibai.lab.hardnessConverter