CONVERT UNITS Lapzsa
Metric, Science & Engineering
Free · Designed for iPad. Not verified for macOS.
Torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance — 685 units, 72 categories, ~40 for science & engineering.
CONVERT UNITS is built for the numbers a general converter treats as an afterthought: torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance. Close to 40 of its 72 categories are scientific and engineering categories, covering 685 units in total, in a fast, no-nonsense dark interface built to do one thing: give you the answer and get out of the way.
Two scrolling lists, a big keypad, and a result that updates as you type.
72 CATEGORIES, 685 UNITS
Torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance — plus length, weight, temperature, speed, area, volume, time, power, energy, data, fuel economy and dozens more.
CURRENCY, CRYPTO AND METALS
- 160 world currencies, with rates refreshed daily.
- 126 cryptocurrencies.
- Gold, silver, platinum and palladium.
- Update rates automatically, once a day, on every launch, or only when you ask.
BUILT TO BE FAST
- An alphabetical index down the side of every list - jump straight to a unit instead of scrolling past hundreds.
- Search every unit in every category from a single field.
- Launch straight into the category you actually use and skip the home screen entirely.
- Hide the categories you never touch, so the grid stays yours.
PRECISION ON YOUR TERMS
- Trim results by significant figures or by decimal places, whichever the spec calls for.
- Significant figures keep small numbers detailed: 0.030333 at 3 figures gives 0.0303.
- Decimal places line every result up on the same column: 2 places gives 13.78.
- Round results up, or leave them exact.
THE DETAILS
- 33 languages: English, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Chinese (Simplified), Chinese (Traditional), Russian, Arabic, Hindi, Thai, Turkish, Vietnamese, Swedish, Norwegian, Danish, Dutch, Romanian, Ukrainian, Czech, Polish, Croatian, Hungarian, Slovak, Malay, Indonesian, Urdu, Tamil, Telugu, and Bengali.
- iPhone and iPad, with a layout built for each, plus Split View so you can convert alongside another app.
- Mute the keypad and lock rotation if you prefer.
- A dark design with bold, readable figures.
Ratings & Reviews
Now in 33 languages.
• 20 new languages: Thai, Turkish, Vietnamese, Swedish, Norwegian, Danish, Dutch, Romanian, Ukrainian, Czech, Polish, Croatian, Hungarian, Slovak, Malay, Indonesian, Urdu, Tamil, Telugu, and Bengali. Urdu joins Arabic with full right-to-left layout.
• Every category, unit and currency name is translated, not just the buttons.
• Numbers are written the way your own country writes them.
Also since 1.0:
• iPad fits nearly twice as many units and categories on screen, sized for the display instead of scaled up from the phone.
• Results can be trimmed by decimal places, not just significant figures.
• Search across every unit in every category from one field.
• Hide the categories you don't use.
• Currency covers 126 cryptocurrencies and the four precious metals alongside 160 world currencies.
The developer, Adysseus, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Yan Liong Tan
- Size
- 15 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Bengali, Croatian, Czech, Danish, Dutch, French, German, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Adysseus