Unit Converter - Henkankun
Convert 100+ units instantly
Free · Designed for iPad. Not verified for macOS.
Henkankun - Your Ultimate Unit Converter
"How many kilometers is 1 mile?" "What's 98°F in Celsius?"
Get instant, accurate answers with this powerful unit conversion app.
KEY FEATURES
18 Categories, 100+ Units
• Length (m, km, in, ft, mi...)
• Mass (g, kg, lb, oz...)
• Temperature (°C, °F, K)
• Area, Volume, Speed, Time
• Pressure, Energy, Power
• Concentration, Fuel Economy, Angle, Frequency
• Flow Rate, Torque, Rotation
• Currency (USD, EUR, JPY + 14 more)
Real-Time Conversion
See multiple conversion results instantly as you type. Compare units at a glance.
One-Tap Swap
Quickly switch between source and target units. Reverse calculations in a flash.
Favorites & History
Save frequently used conversions. Access your conversion history anytime.
High-Precision Engine
Powered by Decimal-based calculations for accurate, error-free results.
PERFECT FOR
• Cooking: cups & oz → mL & g
• Travel: miles → km, °F → °C
• DIY & Crafts: inches → cm
• Work: PSI → Pa, gallons → L
•Study & Research: Quick unit system conversions
DESIGNED FOR SIMPLICITY
• Clean, intuitive interface
• Dark mode support
• English & Japanese languages
• Customizable decimal places & rounding
• Non-intrusive ads for a smooth experience
FULLY OFFLINE
No internet required. Use it anywhere, anytime — even while traveling abroad with no data worries!
From daily life to professional work, Henkankun handles all your unit conversion needs.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
We have implemented the “Data Capacity and Data Transfer Speed” category, “Shakkanho Units,” and “Calculation Formula Input.”
The developer, Takumi Kinjo, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Takumi Kinjo
- Size
- 48.4 MB
- Category
- Utilities
- 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 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 tkdeveloper