# UnitConverter byNSDev > Comprehensive unit converter with extensive unit support and customizable decimal places. (iPhone/iPad app by NIHON SYSTEM DEVELOPER CORPORATION.) - Source: https://appshunter.io/ios/app/unitconverter-bynsdev/id1229121492 (this page in markdown: same URL + `.md`) - Developer: [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) - Category: Utilities, Productivity - Price: Free - Age rating: 4+ - Requires: iOS 15.6 · 4 MB - Languages: American English, Japanese - Released: 2017-06-17 - Data updated: 2026-09-03 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/unitconverter-bynsdev/id1229121492/reviews.md ## What is UnitConverter byNSDev? Tool to convert each of 26 types of units. When you select a unit of value that you enter, you create a table to calculate all the other units. It also displays the conversion rate. You can also specify the number of decimal places. 23 units in Length 18 units in Area 31 units in Volume 15 units in Mass 5 units in Angle 4 units in Temperature 7 units in Time 3 units in Frequency 5 units in Force 17 units in Pressure 6 units in Energy 6 units in Power rate 13 units in Speed 14 units in Acceleration 2 units in Dynamic viscosity 4 units in Kinematic viscosity 3 units in Magnetic flux density 2 units in Magnetic flux 7 units in Luminance 4 units in Illuminance 3 units in Radiation - source activity 2 units in Radiation - absorbed dose 2 units in Radiation - equivalent dose 2 units in Radiation - exposure 7 units in Infomation 7 units in Resolution Because we want to support units around the world, We will wait for the name and unit conversion information. Please enter your review. ## Key features - Converts 26 types of units - Displays conversion rates - Customizable decimal places - Supports numerous units in various categories - User-submitted unit requests ## Recent user reviews (10 of 20) All indexed reviews: https://appshunter.io/ios/app/unitconverter-bynsdev/id1229121492/reviews.md ### 2/5 — 熱量が… *2023-01-29* エネルギーだったか熱量だったかkwからJとかkcalが無くなったのかなぁ〜？ ### 2/5 — 畳が欲しい *2021-12-05* 日本のある程度生活範囲の広さと平米(平方メートル)変換に利用したいと思いましたが「畳」の単位が見当たりませんでした。「坪」があるので、「畳」もあると嬉しいです。 ### 2/5 — ポイント（pt）と級（Q） *2021-09-14* 印刷物組版によく使う長さ単位の、ポイント（ポ、pt）と級（Q）が欲しいです。 よろしくお願いします。 ### 3/5 — フレンチが欲しい *2020-10-28* フレンチサイズがわかれば最高なんですが。 ### 2/5 — 改善希望 *2019-09-02* 面積換算に東京ドーム何個分などの既存建物を加えてほしい。 ### 4/5 — 面積に「畳」が欲しい *2018-09-19* 様々な単位が変換できて素晴らしいのですが、頻繁に調べたい「畳」の変換が出来ないので、追加してほしいです。 ### 1/5 — 間違い *2018-07-04* 圧力の変換違ってました。例えば1MPa=10bar では？ とにかくメガパスカルの単位が間違いです。 **Developer response:** レビューありがとうございます。 バージョン1.04で修正しました。 kPa GPaも追加しました。 ### 1/5 — 換算間違い *2018-06-29* 圧力のMpaの換算が違います。 **Developer response:** レビューありがとうございます。 バージョン1.04で修正しました。 kPa GPaも追加しました。 ### 3/5 — 圧力の水柱mmH2Oについて *2018-06-12* 0.1MPaと入力すると、10000mmH2Oではなく、10mmH2Oと表示されます。 間違い？ですよね？ **Developer response:** レビューありがとうございます。 バージョン1.04で修正しました。 kPa GPaも追加しました。 ### 3/5 — 圧力直して下さい *2018-06-08* 1MP a=1000Paになっているので修正して下さい。 操作性は良好です。 **Developer response:** レビューありがとうございます。 バージョン1.04で修正しました。 kPa GPaも追加しました。 ## Frequently asked questions about UnitConverter byNSDev ### What types of units can Unit Converter convert? Unit Converter supports 26 different types of units, including length, area, volume, mass, temperature, time, speed, pressure, and many more. The app continuously aims to support units from around the world. ### Can I customize the precision of conversions in Unit Converter? Yes, you can specify the number of decimal places for your conversions in Unit Converter. This allows for precise calculations tailored to your needs. ### Does Unit Converter have ads? No, Unit Converter is ad-free. You can use all its conversion features without any interruptions from advertisements. ### What devices is Unit Converter available on? Unit Converter is available on iPhone, iPad, and iPod. It is designed to function across these Apple devices. ### How often is Unit Converter updated? The latest version of Unit Converter is 1.0.6, last updated on January 13, 2025. Updates typically occur to add new features or improve existing ones. ### Is Unit Converter suitable for educational purposes? Yes, Unit Converter is a valuable tool for educational purposes, especially for students learning about various units of measurement and their conversions across different scientific and practical fields. ### Can users suggest new units for Unit Converter? Yes, the developers welcome user input. You can enter your review and provide name and unit conversion information for units you would like to see supported in future updates. ### What is the age rating for Unit Converter? Unit Converter has an age rating of 4+. This indicates it is suitable for children and adults alike, with no mature content. ## Version history (last 5 releases) ### 1.0.6 — 2025-01-13 Rebuild for iOS18 ### 1.0.5 — 2021-06-29 Rebuild for iOS14 ### 1.0.4 — 2018-08-03 This app has been updated by Apple to display the Apple Watch app icon. Fixed problem that Pressure MPa Add Pressure kPa and GPa ### 1.0.3 — 2018-04-18 Fixed problem that resolution can not be calculated ### 1.0.2 — 2018-04-14 MPa was added to the pressure. Rebuild fot iOS11. ## Apps similar to UnitConverter byNSDev | App | Rating | Price | Category | | --- | --- | --- | --- | | [建設mazec](https://appshunter.io/ios/app/mazec/id1032194799) | 1.0 (1) | Free | Utilities | | [Unit Converter Currency Rate](https://appshunter.io/ios/app/unit-converter-currency-rate/id1557869688) | 4.6 (195) | Free | Utilities | | [Shakkan-hō Pro Converter](https://appshunter.io/ios/app/shakkan-ho-pro-converter/id6751975754) | — | Free | Utilities | | [Force Unit Converter](https://appshunter.io/ios/app/force-unit-converter/id1415262579) | 5.0 (3) | Free | Utilities | | [US Unit Converter](https://appshunter.io/ios/app/us-unit-converter/id1577905442) | 4.8 (107) | Free | Utilities | | [シンプル建築単位変換](https://appshunter.io/ios/app/id6468021875) | — | Free | Utilities | ## More apps by NIHON SYSTEM DEVELOPER CORPORATION - [SousyoConverter byNSDev](https://appshunter.io/ios/app/sousyoconverter-bynsdev/id1198103735) - [GyousyoConverter byNSDev](https://appshunter.io/ios/app/gyousyoconverter-bynsdev/id1203329285) - [ReisyoConverter byNSDev](https://appshunter.io/ios/app/reisyoconverter-bynsdev/id1204297496) - [MouhitsuConverter byNSDev](https://appshunter.io/ios/app/mouhitsuconverter-bynsdev/id1204694373) - [AreaCalculator byNSDev](https://appshunter.io/ios/app/areacalculator-bynsdev/id1214895582) - [KanjiSousyoQuiz byNSDev](https://appshunter.io/ios/app/kanjisousyoquiz-bynsdev/id1224634517) All apps by NIHON SYSTEM DEVELOPER CORPORATION: https://appshunter.io/developer/1198103734 ## Related topics [gyousyoconverter bynsdev](https://appshunter.io/ios/topics/gyousyoconverter-bynsdev) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*