# Converter of Units — Measurements, dates and tank

> Free unit converter with date and tank calculators for Apple devices. (iPhone/iPad app by Ramon Rivas.)

- Source: https://appshunter.io/ios/app/converter-of-units/id1350148498 (this page in markdown: same URL + `.md`)
- Developer: [Ramon Rivas](https://appshunter.io/developer/664569135)
- Category: Productivity, Education
- Price: Free
- Rating: 4.73/5 from 48 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 6 MB
- Languages: English, Spanish
- Released: 2018-03-20
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/converter-of-units/id1350148498/reviews.md

## What is Converter of Units?

The unit converter feature from our popular aio Calculator is now available as a standalone app. Always free and without ads.

It's an easy to use and modern converter with a unique combination of features which include:
• Available on all iPad, iPhone and iPod devices
• Sidebar and Tab bar for easier navigation and sharing of data
• Multiple Windows
• Stage Manager
• Drag and Drop from the Sidebar to the edge of the screen to create new windows
• Context Menus
• Quick Start Guide
• Light and Dark appearance
• Multitasking
• Full support for drag and drop
• Quick Notes
• Capture text
• Keyboard shortcuts
• Pointer interaction
• Two finger swipe for quick editing in Unit Converter and History
• Slider for precision control
• Undo and redo
• HomeScreen icon for quick actions
• Spotlight search
• Accessibility features like VoiceOver and Dynamic Type (larger text)
• Allows you to share results; including using AirDrop
• Takes advantage of the larger display in iPad
• Settings to customize the app
• Conversions saved and restored for all measurements
• Quick Convert feature

Has close to 500 units in the following 38 measurements:
• Area
• Acceleration
• Angle
• Computer Data Storage
• Computer Data Rate
• Concentration - Glucose
• Currency
• Density
• Energy
• Electric Vehicle Efficiency
• Electrical Current
• Electrical Voltage
• Electrical Charge
• Electrical Resistance
• Electrical Inductance
• FlowRate-Liquid
• FlowRate-Dry
• Force
• Frequency
• Fuel Economy
• Illumination
• Ladies Shoe Size
• Length
• Luminance
• Mens Shoe Size
• Magnetic Field Strength
• Magnetic Flux
• Magnetic Flux Density
• Magnetomotive Force
• Mass / Weight
• Power
• Pressure
• Speed / Velocity
• Temperature
• Time
• Torque
• Volume - Liquid Capacity
• Volume - Dry Capacity

Date calculators
• Calculate the difference between two dates
• Add (or subtracting) from a given date

Tank Capacity
• Horizontal Cylinder
• Vertical Cylinder
• Rectangular
• Horizontal Oval
• Vertical Oval
• Horizontal Capsule
• Vertical Capsule
• Sphere

Mixture Calculator
• Calculate the needed volume for a mixture at a given ratio

Info feature
• Detailed description of the app available in all features
• Table of contents and search allow you to find topics of interest

Email requests to have more measurements or units added.

Future updates will continue to add more features.

Enjoy our app that, as always, is free and without ads!

## Key features

- Extensive unit conversion library
- Date difference and addition calculator
- Multiple tank capacity calculators
- Multitasking and drag-and-drop support
- Light and dark appearance modes
- Accessibility features
- Customizable settings

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/converter-of-units/id1350148498/reviews.md

### 5/5 — Complete useful converter

*2025-01-01*

Friendly user interface

### 5/5 — Simple design yet so powerful and intuitive to use!

*2024-12-01*

I have been wasting my time using others with fancy colors(why), not easy to use and limited. This one is so simple yet powerful and gives you multiple conversions on 1 screen. Perfect!

### 5/5 — Usage of app

*2020-08-15, version 3.2.0*

Really worked to my desire. I recommend other to use. - Umesh

### 5/5 — Much better

*2019-06-12, version 2.5.1*

Very good and useful app

### 5/5 — Very useful

*2018-05-02*

This conversion app is packed with awesome sauce with a dash of pure genius. Oh, and it’s free.

## Frequently asked questions about Converter of Units

### Does Converter of Units have ads?

No, Converter of Units is completely free and does not contain any advertisements. The developer explicitly states that the app is free and without ads.

### What devices is Converter of Units available on?

Converter of Units is available on all iPad, iPhone, and iPod devices. It is designed to take advantage of larger displays on iPads.

### How many units does Converter of Units support?

Converter of Units supports close to 500 units across 38 different measurements, including common categories like length, mass, and temperature, as well as more specialized ones.

### Can I calculate tank capacities with Converter of Units?

Yes, Converter of Units includes calculators for various tank shapes, such as horizontal and vertical cylinders, rectangular tanks, ovals, capsules, and spheres.

### What are the accessibility features in Converter of Units?

Converter of Units includes accessibility features like VoiceOver support and Dynamic Type for larger text sizes, making it usable for a wider range of users.

### How often is Converter of Units updated?

The app was last updated on March 10, 2026, indicating a commitment to ongoing development. Future updates are planned to add more features.

### What is the user rating for Converter of Units?

Converter of Units has a very high user rating of 4.9 stars based on 45 ratings, suggesting strong user satisfaction.

### Can I customize Converter of Units?

Yes, the app includes settings that allow you to customize its appearance and behavior. Conversions are also saved and restored for all measurements.

## Version history (last 5 releases)

### 7.3.3 — 2026-05-28

Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected focus and number pad problem in measurements
• Added show toolbar button to navigation bar (shows when toolbar has been hidden)
• General improvements and corrections

### 7.3.2 — 2026-04-18

Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Corrected formatting problem in different locales
• General improvements and corrections

### 7.3.0 — 2026-03-10

Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• Corrected problem with Undo/Redo
• General improvements and corrections

### 7.2.0 — 2026-01-11

Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models) 
• General improvements and corrections

### 7.1.0 — 2025-12-19

Thank you for using our app. It's regularly improved and modernized to better serve you.

Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models) 
• General improvements and corrections

## Apps similar to Converter of Units

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [CONVERT UNITS](https://appshunter.io/ios/app/convert-units/id1114969241) | 4.8 (932) | Free | Productivity |
| [Unit Converter : Best Unit App](https://appshunter.io/ios/app/unit-converter-best-unit-app/id6450140068) | 4.0 (2) | Free | Productivity |
| [Unit Converter Superior](https://appshunter.io/ios/app/unit-converter-superior/id1630757981) | — | Free | Productivity |
| [Unit Converter and Conversion](https://appshunter.io/ios/app/unit-converter-and-conversion/id1350107532) | 3.9 (44) | Free | Productivity |
| [Area Measure Calculator](https://appshunter.io/ios/app/area-measure-calculator/id6471523996) | 5.0 (1) | Free | Productivity |
| [Unit Converter A1](https://appshunter.io/ios/app/unit-converter-a1/id1588554636) | 2.0 (1) | Free | Productivity |

## More apps by Ramon Rivas

- [All in One Calculator](https://appshunter.io/ios/app/all-in-one-calculator/id664569132)

All apps by Ramon Rivas: https://appshunter.io/developer/664569135

---

*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 2026-07-07.*