Jigendentaku
Calculate with units.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
A calculator that handles units. 3kg+5m? Stopped. 60km/h x 2h = 120km. 210kcal = about 2 bananas.
A new kind of calculator that takes units seriously.
Add kg, km/h, kcal to your numbers and just multiply or divide. 60 km/h × 2 h correctly gives you 120 km. 1 kWh ÷ 1 h = 1 kW works naturally too.
Trying to add unrelated units like 3 kg + 5 m? The app politely stops you and offers to switch to multiplication with one tap. You catch the mistake and move on instantly.
Length, mass, energy and data results are also compared with familiar things: 210 kcal shows "banana ≈ 2 ×", 4.7 GB shows "DVD ≈ 1 ×". Numbers regain their meaning.
Features
- Launches with the leading unit of the active category preselected (Mass → kg)
- 9 categories: Mass, Length, Time, Volume, Area, Temperature, Speed, Data, Energy
- SI base units + Celsius/Fahrenheit + binary data units (KiB, GiB)
- Imperial units (in, ft, yd, mi, lb, oz) and US cooking measures (gallon, fl oz, cup)
- Japanese cooking measures (cup, tablespoon, teaspoon)
- Tap "No unit" to use it as a regular calculator
- Smart blocking of dimensionally invalid calculations
- Scale comparison cards for length, mass, energy and data results
- Available in 9 languages
"If you can't measure it, you can't understand it."
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Changed how ads are delivered
- Added a personalized ads setting (change it from "Ad settings" in Settings)
- Results are now shown in the units you entered (e.g. 1 km + 500 m = 1.5 km)
- Pressing ± while a result is shown now flips its sign
- Other minor fixes
The developer, Fuji Bit Inc., 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
- Seller
- Fuji Bit Inc.
- Size
- 6.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove ads $0.99
- Copyright
- © 2026 Fuji Bit