Units Expert
Ultimate Unit Converter
$1.99
Convert between 85+ units across 10 categories. Offline, fast, and accurate. Perfect for students, professionals, and everyday use.
Units Expert is a powerful, offline-first unit conversion app designed for professionals, students, and anyone who needs accurate unit conversions on the go. With support for 85+ units across 10 major categories, this app is your complete solution for all conversion needs.
Key Features
Comprehensive Unit Coverage
Length: Meter, kilometer, mile, yard, foot, inch, and more
Weight: Kilogram, gram, pound, ounce, ton, and more
Temperature: Celsius, Fahrenheit, Kelvin
Speed: m/s, km/h, mph, knots, and more
Volume: Liter, gallon, quart, cup, tablespoon, and more
Area: Square meter, square mile, hectare, acre, and more
Time: Second, minute, hour, day, week, month, year
Digital Storage: Bit, byte, KB, MB, GB, TB, and more
Energy: Joule, calorie, kWh, BTU, and more
Pressure: Pascal, bar, psi, atmosphere, and more
Smart & Intuitive
Real-time conversion as you type
Swap units with a single tap
Beautiful, modern UI interface
Dark mode support
Automatic history tracking
Favorite frequently used units
Smart sorting by usage frequency
Privacy-First
100% offline - no internet required
All data stored locally on your device
No ads, no tracking, no data collection
Complete privacy protection
Powerful Features
Conversion history with up to 100 recent conversions
Customizable decimal places (0–9 digits)
Copy results to clipboard instantly
Export and import data for backup
Multi-language support (English, Chinese, Spanish)
Usage statistics for each category
Perfect For
Students studying science, engineering, or mathematics
Professionals in construction, engineering, or manufacturing
Travelers converting currencies and measurements
Cooks and bakers converting recipes
Anyone who needs quick, accurate conversions
https://sites.google.com/view/units-expert-privacy-policy
https://sites.google.com/view/units-expert-terms-of-service
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Dawei Xiong, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dawei Xiong
- Size
- 21.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 10.15 or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Dawei Xiong
