# ConverterBox - Unit Converter — The definitive unit converter

> Universal unit converter with integrated unit definitions and customizable categories. (iPhone/iPad app by FLEMINGER MEDIA LLC.)

- Source: https://appshunter.io/ios/app/converterbox-unit-converter/id586081377 (this page in markdown: same URL + `.md`)
- Developer: [FLEMINGER MEDIA LLC](https://appshunter.io/developer/427480054)
- Category: Reference, Utilities
- Price: $4.99
- Rating: 4.60/5 from 5 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 4 MB
- Languages: English
- Released: 2012-12-14
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/converterbox-unit-converter/id586081377/reviews.md

## What is ConverterBox?

The ideal tool for travelers, students, and professionals for converting currencies and measurement units.

ConverterBox is a user-friendly universal unit converter with a twist: it provides reference definitions for every conversion unit.

What makes ConverterBox different:

— Instant results as you type: ConverterBox provides instant results as you type a new value. Most other unit converters only show you two units at a time and require you to go through too many steps before seeing the calculation results.

—Informative: Learn about each unit without opening an external app or a web browser and or the need to be online. Tap the question/info button next to the unit you want to learn about, and a description of that unit will pop up.

—Customizable: Add, remove, and sort units and categories according to your preference.

—Up-to-date currency exchange information — perfect for traveling, home, or office use. Stores the latest update, so you don't have to be online to calculate the exchange rates.

Categories include: 
—Length
—Weight
—Currency
—Angle
—Temperature
—Volume
—Area
—Speed
—Time
—Force
—Pressure
—SI system prefixes
—Computer data sizes
—Radix (numeral base)
—Typography
—Many more are in the works for the upcoming updates!


—Numeral base (radix) conversions: Lets you convert between binary, decimal, hexadecimal, and 32 other numeral base systems! Supports every base from 2 (binary) to 36 (Hexatrigesimal) and fractions in each one of those systems!


With a list of over 300 units and definitions, this is the perfect tool for students, teachers, and professionals!

## Key features

- Instant results as you type
- Integrated unit definitions
- Customizable unit categories
- Up-to-date currency exchange rates
- Numeral base conversions
- Over 300 units and definitions

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/converterbox-unit-converter/id586081377/reviews.md

### 5/5 — Great!!!

*2013-03-07, version 1.3*

This works great!!! Thank you for making this app!

### 1/5 — Worst app ever

*2013-01-07, version 1.1*

The ONE thing my girlfriend and I wanted to look up was how many millilitres are in 1 US cup and the converter gives the wrong answer. Won't even bother trying to calculate any other conversion.

FYI: 1 US CUP = 250 ML NOT 125.

### 5/5 — Handy App!

*2012-12-20, version 1.0*

This app is great if you need to convert units regularly.  It is fast and the results come up right away.  I'm a student and this app makes homework so much easier.  Highly recommended!

### 5/5 — Great app

*2012-12-19, version 1.0*

Helpful app. I'll be using it a lot. Works smoothly, easy to use and the explanations are a really nice touch.

### 5/5 — Best app out there

*2012-12-16, version 1.0*

I got a recommendation from a friend about this app. It's well worth the money! I got a long list of possible conversions and the interface is very user friendly and clear. I been using other apps but this one is my winner. Thank you for a great product!

## Frequently asked questions about ConverterBox

### What is ConverterBox?

ConverterBox is a universal unit converter that provides instant results as you type. It also includes reference definitions for each unit, allowing you to learn about them directly within the app.

### How does ConverterBox provide instant results?

ConverterBox calculates conversions in real-time as you input values, eliminating the need for multiple steps often found in other converters. This feature ensures you see results immediately.

### Can I customize ConverterBox?

Yes, ConverterBox is highly customizable. You can add, remove, and reorder units and entire categories to suit your specific needs and preferences.

### Does ConverterBox require an internet connection?

No, ConverterBox does not require an internet connection for most functions. It stores the latest currency exchange information locally, allowing you to calculate rates offline.

### What types of conversions does ConverterBox support?

ConverterBox supports a wide range of conversions, including length, weight, currency, temperature, volume, area, speed, time, force, pressure, and numeral base conversions (from base 2 to 36).

### What is the price of ConverterBox?

ConverterBox is a paid application, priced at $4.99. This one-time purchase grants you access to all its features.

### Is ConverterBox available on Android?

Based on the provided data, ConverterBox is available on iPhone, iPad, and iPod. Information regarding Android availability is not included.

### How often is ConverterBox updated?

The latest version of ConverterBox is 2.2, which was last updated on March 4, 2021. More categories are planned for upcoming updates.

## Version history (last 5 releases)

### 2.2 — 2021-03-04

- New category: Energy unit conversion
- Added inches of H2O unit to pressure category
- Bug fixes

### 2.1.1 — 2020-11-13

- Fixed currency exchange conversion

### 2.1.0 — 2017-11-20

- Ready for iOS 11
- Fixed currency exchange rates not updating

### 2.0.1 — 2015-05-27

-Fixes bug which can cause app to freeze on startup on the iPad

### 2.0.0 — 2015-04-10

-Improved UI
-Critical bug fixes

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*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 2026-06-10.*