--- title: "Hardness Unit Converter - Reviews, Revenue and Downloads in Vietnam | Apple App Store" description: "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 hardnes" --- # Hardness Unit Converter — Vietnam ![Hardness Unit Converter App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/f0/85/34/f085343b-2c6a-8a01-6018-89e4d3d349bf/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [Kei Suefuji](https://apptail.io/developer/kei-suefuji-xv) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.gmail.a.kikibai.lab.hardnessConverter **Store:** Apple App Store **Country:** Vietnam **Version:** 2.5.0 (released 2026-01-12) **Original Release:** 2018-07-28 **Languages:** English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish, Thai, Turkish **App Store Link:** [Download on Apple App Store](https://apps.apple.com/vn/app/app/id1409248484) **AppTail Page:** [https://apptail.io/app/app-rcJe/vietnam](https://apptail.io/app/app-rcJe/vietnam) ## Hardness Unit Converter Description 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 (). ## Hardness Unit Converter Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/3a/1d/0e/3a1d0e8d-ebc8-7faf-cd04-f84e87280991/c2b86a25-2cbf-4df2-9bad-c79e9192b561_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-27_at_17.07.05.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/99/b7/0e/99b70e35-8a66-3ddc-a084-0ce9459c0f82/19538936-3e57-488f-aa4d-d979bb6cb892_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-27_at_17.07.57.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource113/v4/4a/b3/7d/4ab37dea-6759-cf58-9fbc-86c07ecc9796/24f0f5a1-a25b-44df-8a10-d7910d1491dd_Simulator_Screen_Shot_-_iPhone_11_Pro_Max_-_2020-06-27_at_17.07.02.png/1242x2688.png) ## Hardness Unit Converter Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Paid | Vietnam | Utilities | #8 | | Top Paid | Vietnam | Overall | #63 | | Top Paid | Japan | Utilities | #116 | | Top Paid | Taiwan | Utilities | #255 | | Top Paid | South Korea | Utilities | #263 | ## Hardness Unit Converter Available In - [China](https://apptail.io/app/app-rcJe/china) - [Japan](https://apptail.io/app/app-rcJe/japan) - [Taiwan](https://apptail.io/app/app-rcJe/taiwan) - [United States](https://apptail.io/app/app-rcJe/united-states) - [South Korea](https://apptail.io/app/app-rcJe/south-korea) - [India](https://apptail.io/app/app-rcJe/india) - [Brazil](https://apptail.io/app/app-rcJe/brazil) - [Thailand](https://apptail.io/app/app-rcJe/thailand) - [Germany](https://apptail.io/app/app-rcJe/germany) - [Mexico](https://apptail.io/app/app-rcJe/mexico) - [Italy](https://apptail.io/app/app-rcJe/italy) - [Netherlands](https://apptail.io/app/app-rcJe/netherlands) - [Portugal](https://apptail.io/app/app-rcJe/portugal) - [Russia](https://apptail.io/app/app-rcJe/russia) - [Denmark](https://apptail.io/app/app-rcJe/denmark) - [United Kingdom](https://apptail.io/app/app-rcJe/united-kingdom) - [Chile](https://apptail.io/app/app-rcJe/chile) - [Spain](https://apptail.io/app/app-rcJe/spain) - [Ireland](https://apptail.io/app/app-rcJe/ireland) - [Kuwait](https://apptail.io/app/app-rcJe/kuwait) - [Kazakhstan](https://apptail.io/app/app-rcJe/kazakhstan) - [Lebanon](https://apptail.io/app/app-rcJe/lebanon) - [Latvia](https://apptail.io/app/app-rcJe/latvia) - [Malaysia](https://apptail.io/app/app-rcJe/malaysia) - [Nigeria](https://apptail.io/app/app-rcJe/nigeria) - [Norway](https://apptail.io/app/app-rcJe/norway) - [Peru](https://apptail.io/app/app-rcJe/peru) - [Philippines](https://apptail.io/app/app-rcJe/philippines) - [Pakistan](https://apptail.io/app/app-rcJe/pakistan) - [Poland](https://apptail.io/app/app-rcJe/poland) - [Saudi Arabia](https://apptail.io/app/app-rcJe/saudi-arabia) - [Sweden](https://apptail.io/app/app-rcJe/sweden) - [Singapore](https://apptail.io/app/app-rcJe/singapore) - [Türkiye](https://apptail.io/app/app-rcJe/turkey) - [Ukraine](https://apptail.io/app/app-rcJe/ukraine) - [Uzbekistan](https://apptail.io/app/app-rcJe/uzbekistan) - [Vietnam](https://apptail.io/app/app-rcJe/vietnam) - [United Arab Emirates](https://apptail.io/app/app-rcJe/united-arab-emirates) - [South Africa](https://apptail.io/app/app-rcJe/south-africa) - [Argentina](https://apptail.io/app/app-rcJe/argentina) - [Australia](https://apptail.io/app/app-rcJe/australia) - [Azerbaijan](https://apptail.io/app/app-rcJe/azerbaijan) - [Belarus](https://apptail.io/app/app-rcJe/belarus) - [Canada](https://apptail.io/app/app-rcJe/canada) - [Switzerland](https://apptail.io/app/app-rcJe/switzerland) - [Colombia](https://apptail.io/app/app-rcJe/colombia) - [Czechia](https://apptail.io/app/app-rcJe/czechia) - [Dominican Republic](https://apptail.io/app/app-rcJe/dominican-republic) - [Algeria](https://apptail.io/app/app-rcJe/algeria) - [Ecuador](https://apptail.io/app/app-rcJe/ecuador) - [Egypt](https://apptail.io/app/app-rcJe/egypt) - [Finland](https://apptail.io/app/app-rcJe/finland) - [France](https://apptail.io/app/app-rcJe/france) - [Greece](https://apptail.io/app/app-rcJe/greece) - [Hong Kong SAR China](https://apptail.io/app/app-rcJe/hong-kong) - [Indonesia](https://apptail.io/app/app-rcJe/indonesia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*