---
title: "Unit Conversion - Converter and Calculator - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "This application offers quick and easy conversion of units. 16 different unit categories are supported, like temparature, currency, distance, weight, volume, ... In addition the app offers a calculato"
---

# Unit Conversion - Converter and Calculator — United States

![Unit Conversion App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple6/v4/58/ec/a7/58eca70c-9d0e-1f10-fc85-c92916ddaf70/mzl.kxdjrblf.png/434x0w.png)

**Developer:** [FAPPS WORLD et Cie SCS](https://apptail.io/developer/fapps-world-et-cie-scs-yo)
**Category:** Utilities
**Rating:** 4.6/5 (101 ratings)
**Price:** Free
**Bundle ID:** com.PlanetArt.UnitConvert
**Store:** Apple App Store
**Country:** United States
**Version:** 1.9 (released 2015-09-16)
**Original Release:** 2009-10-30
**Languages:** German, Arabic, Danish, English, Finnish, French, Greek (modern), Hebrew (modern), Indonesian, Italian, Japanese, Catalan, Korean, Malay, Dutch, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Swedish, Slovak, Spanish, Thai, Chinese, Czech, Turkish, Ukrainian, Hungarian, Vietnamese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id336359986)
**AppTail Page:** [https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/united-states](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/united-states)

## Unit Conversion Description
This application offers quick and easy conversion of units. 16 different unit categories are supported, like temparature, currency, distance, weight, volume, ...
In addition the app offers a calculator. You don't have to switch any more between conversion and calculation apps.
There are even two calculators included, a standard and a scientific one.
Units are sorted by frequency of usage, the units used most often show up on top of the list. No need to scroll anymore to find your favorite units.
Programmable buttons make it possible to access your favorite conversion units even faster.
All functionalities are accessible on the main screen, no need for tedious switching between sub-screens.

List of supported unit categories:
- currency (live update)
- temperature
- distance
- weight
- volume
- time
- surface
- speed
- angle
- data storage
- energy
- power
- pressure
- concentration
- radioactivity
- typography

Features:
- simple and intuitive user interface
- 2 calculators: standard and scientific
- units are sorted by the frequency by which you are using them. The units you are using most are shown on top. This allows much faster working.
- live update of currency conversion rates
- programmable buttons: save your favorite unit conversions on these buttons for faster working.
- swap key, for fast swap of the 2 selected units
- all settings are saved when leaving the application

Instructions:
The programmable buttons are the blue buttons at the top. Hold one down until you hear the beep and the selected units will be saved on this button. Press the button again for fast recall of this unit pair.
If the app emits a beep while working it means you have made an invalid operation, like for example the square root of a negative number.

Please note:
For currency conversion rates are downloaded from an internet server. Without a working internet connection the currency category will not show up.

If you have any problems contact us at support@fappsworld.com

## Unit Conversion Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple4/v4/fc/eb/0f/fceb0fa6-31e0-46dd-549c-8cba360ebf4c/mzl.exdkmqez.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple/v4/d9/70/b9/d970b993-2175-3d41-6718-691ee8f20423/mzl.oxeihcwd.png/640x960.png)

## Unit Conversion Rating Breakdown in United States
- 5 stars: 78 (77%)
- 4 stars: 15 (15%)
- 3 stars: 1 (1%)
- 2 stars: 2 (2%)
- 1 stars: 5 (5%)

## Unit Conversion Reviews in United States

### ***** "Very simple"
The most reliable go to unit converter ever! Love it!
-- Buller 27, 2022-09-21

### ***** "Really helpful"
This app is probably the one app I have used the longest. I have used it in so many situations. I use it in my personal life and on the job.
-- Tiger  W, 2022-02-21

### ***** "So useful"
Well, it’s definitely a must have. Ideal for folks that work with US and Imperial and KG measures. Easy to use and fun.
-- the Fact & All, 2021-05-18

### ***** "Love it"
Very intuitive and easy to use.
-- SgtMac, 2021-04-27

### ***** "We need an update to the new IOS, please!"
We need an update to the new IOS please
-- JOseDurand, 2020-12-31

### ***** "Convenient"
Handy
-- DeepblueKat, 2020-05-17

### *---- "Useless calculator function. Don’t bother."
This is one of the few converter that offers a built in calculator. Unfortunately, it’s useless if you want to manipulate the value on the right in the calculator.
-- vferdman, 2019-12-22

### *---- "If it costs money, it should be complete."
Seriously... no cubic inches, feet, or yards????
I haven’t checked the other conversions, but what are they missing? Refund my money please
-- Myyellowlab, 2019-07-24

### ***** "I Like it!"
I have a few other conversation apps, but I always end up using this one. It works & I use it often for a lot of different things. It’s never let me down. Accept for having to choose a nickname for writing this review..., several names I wanted were already used. This is nuts. I’m beginning to think there is a flaw in the software.
-- 7/9/19, 2019-07-10

### ***** "Great app"
Really useful!
-- abacero, 2018-11-11

[View all Unit Conversion reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Unit Conversion Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Italy | Utilities | #57 |
| Top Paid | Austria | Utilities | #86 |
| Top Paid | Switzerland | Utilities | #107 |
| Top Paid | France | Utilities | #120 |
| Top Paid | Ecuador | Utilities | #135 |
| Top Paid | Mexico | Utilities | #139 |
| Top Paid | Colombia | Utilities | #154 |
| Top Paid | Dominican Republic | Utilities | #156 |
| Top Paid | Chile | Utilities | #163 |
| Top Paid | Belgium | Utilities | #175 |
| Top Paid | Canada | Utilities | #192 |
| Top Paid | Peru | Utilities | #205 |
| Top Paid | Philippines | Utilities | #216 |
| Top Paid | Argentina | Utilities | #218 |
| Top Paid | New Zealand | Utilities | #224 |
| Top Paid | Singapore | Utilities | #237 |
| Top Paid | Portugal | Utilities | #246 |
| Top Paid | Australia | Utilities | #247 |

## Unit Conversion Discovered Keywords
- currency converter
- unit conversion
- converter and calculator


## Unit Conversion Available In
- [United States](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/united-states)
- [Canada](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/canada)
- [France](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/france)
- [Germany](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/germany)
- [Mexico](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/mexico)
- [Australia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/australia)
- [Switzerland](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/switzerland)
- [Austria](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/austria)
- [United Kingdom](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/united-kingdom)
- [Brazil](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/brazil)
- [Italy](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/italy)
- [Spain](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/spain)
- [New Zealand](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/new-zealand)
- [Belgium](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/belgium)
- [Sweden](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/sweden)
- [South Korea](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/south-korea)
- [Denmark](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/denmark)
- [Greece](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/greece)
- [Ecuador](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/ecuador)
- [Ireland](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/ireland)
- [Israel](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/israel)
- [India](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/india)
- [Jordan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/jordan)
- [Japan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/japan)
- [Kuwait](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/kuwait)
- [Kazakhstan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/kazakhstan)
- [Lebanon](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/lebanon)
- [Sri Lanka](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/sri-lanka)
- [Lithuania](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/lithuania)
- [Luxembourg](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/luxembourg)
- [Latvia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/latvia)
- [Madagascar](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/madagascar)
- [Malta](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/malta)
- [Malaysia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/malaysia)
- [Nigeria](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/nigeria)
- [Netherlands](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/netherlands)
- [Norway](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/norway)
- [Nepal](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/nepal)
- [Peru](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/peru)
- [Philippines](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/philippines)
- [Pakistan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/pakistan)
- [Poland](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/poland)
- [Portugal](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/portugal)
- [Paraguay](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/paraguay)
- [Romania](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/romania)
- [Russia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/russia)
- [Saudi Arabia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/saudi-arabia)
- [Singapore](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/singapore)
- [Slovenia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/slovenia)
- [Slovakia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/slovakia)
- [Thailand](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/thailand)
- [Tunisia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/tunisia)
- [Türkiye](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/turkey)
- [Taiwan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/taiwan)
- [Ukraine](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/ukraine)
- [Uzbekistan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/uzbekistan)
- [Vietnam](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/vietnam)
- [United Arab Emirates](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/united-arab-emirates)
- [South Africa](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/south-africa)
- [Armenia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/armenia)
- [Argentina](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/argentina)
- [Azerbaijan](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/azerbaijan)
- [Bermuda](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/bermuda)
- [Brunei](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/brunei)
- [Belarus](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/belarus)
- [Chile](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/chile)
- [China](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/china)
- [Colombia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/colombia)
- [Cyprus](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/cyprus)
- [Czechia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/czechia)
- [Dominican Republic](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/dominican-republic)
- [Algeria](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/algeria)
- [Egypt](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/egypt)
- [Finland](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/finland)
- [Hong Kong SAR China](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/hong-kong)
- [Hungary](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/hungary)
- [Indonesia](https://apptail.io/app/unit-conversion-converter-and-calculator-hBwc/indonesia)

---

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