About Converter

The Converter is the contextual unit converter, currency converter and timezone converter for Firefox — experience the web with familiar metrics! The Converter is a no-thrills tool. It aims to be intuitive for the average user during casual text reading. You can’t specify the precision[1]. You can’t tweak the resulting units. You don’t get the results in several formats. If you need any of that fancy stuff for scientific purposes you should probably use another tool.

How It Works

Single Conversion

Select a piece of text containing a measurement and right click: the converted value will be shown in the resulting pop-up menu.

Page Conversion

Left-click on the Converter icon in the bottom-right corner: all measurements in the current web page are converted.

Custom Conversions

Right-click on the Converter icon in the bottom-right corner, and choose “Custom conversion”—this way you can even convert offline measurements!

Large Number Of Units & Formats

Take a look at the examples page for a quick overview of the formats and units the Converter currently understands. Even more units will be supported in future versions.

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Fast, Smart, Intuitive Operation

Since this tool aims at day-to-day, contextual operation, it performs quite a few tricks to come in handy with as little hassle as possible.

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New features

The units are flexible. The Converter can identify several notations for the same type of unit: m, meter, meters, metre and metres all identify the same unit and trigger the same conversion.

The values can use fractions. Many texts include dimensions as fractions, for instance 1/10 m—the Converter evaluates fractions in the input.

The wacky Imperial technical format is supported. Yes, 1’10-3/16″ is properly converted. Take a look at the examples page for all the supported formats.

Latest Updates

News From Our Blog

Ten Best Calculator Apps for Android

  1. GeoGebra-

Geogebra app has a simple programming interface that makes it very easy to develop graphs and shapes. The graphs int eh app can be created by dragging and dropping shapes and get the complete power to manipulate the graphs using your finger.

  1. MyScript Calculator-

The biggest problem everyone faces while trying to solve a math problem is with a calculator app which is entering the data using the on-screen buttons. Most people are used to writing and solving math equations on paper, so by switching to an on-screen button can make things harder, unless if you use the Myscript app. This app allows you to use your hand to enter equations by which these equations are converted into a digital equation.

My Currency Converter

  1. Calculator by ASUS-

The calculator app by ASUS uses the big buttons and also multiple themes to make it easier for the user to input data. The app even includes quick swipe gestures that allow quick access to different operators. The app also can tilt the phone to switch between standard and scientific modes.

  1. Calculator by Google-

This app is basic calculator perfect for everyday use but what makes it the best is its amazing simple design and smooth working. On the app you can do basic math calculation such as multiplication, division, subtraction, etc. and also solve few scientific operations like trigonometry,  logarithm, constant and exponentials.

  1. CalcTape-

CalcTape is another app that also uses a Notepad-like interface, but the app uses the same classic type method of showing results under the input. The app is best at doing math problems and even lets you check the changes in real-time so you can edit the results if you needed.


  1. Calculator Plus-

The calculator Plus App has a program that is very similar to a handheld digital calculator. The app can do many functions that you need quick calculations. It also offers a memory feature that allows you to store and recall calculations from the past.

  1. Calculator ++-

This app provides a standard mode that offers the basic math calculations tools along with multi-digit support, other basic math tools, one-tap copy/paste. In the app, there is an engineer mode that helps you to use advanced tools to solve problems like powers, logarithms, trigonometry.

  1. CALCU-

The CALCU app is known for customizing your calculator’s looks and its layout. This app even gives various themes that can completely change the look of the calculator even the fonts, design and style. The app can also customize its button layout so it can keep the most used operators handy.


  1. One++-

This app includes an extensive collection of various formulas to solve math, economic and physics equations. You can also use this app to find solutions to problems such as light, body mass, rhombus, velocity, and over a thousand other formulas.

  1. CalcNote-

This app gives a Notepad-like structure, where your equations are listed in eh left half and the calculations in the right half. It is the best half to manage your account and finances as the app lets you use advanced math operators and calculate it instantly as you type.

Best Currency Converter Apps That Are Best Suited For Travelers

There will be times when you need to make use of a currency converter, especially if you travel very often as you’d have to check the conversion rates before withdrawing money. You’d most probably have to guess what the exchange rates are and end up getting a nasty surprise when you how much you’d actually drawn.


It may, at times, work to your favor as well but why would you want to take the risk when you could make use of a currency converter app? Here are some of the best currency converter apps that are best suited for travelers.



The CalConvert app is more than just a simple converter as it also includes a scientific calculator that helps you perform mathematical functions that are far advanced. The results, as well as the calculations, can be viewed even after it has been erased since it features a history tab for all your previous calculation. If you ever feel like you’re lost while using the app, you can call the support line which is available 24/7.


My Currency Converter

My Currency Converter app is best suited for those who deal with virtual currencies a lot apart from also being an excellent fiat currency converter. It currently features support for a wide range of cryptocurrencies such as BitCoin or even DogeCoin. You also do not need to worry about the conversion rates being updated since the rates update in real-time in the app as well. The maximum number of decimal figures that it offers is 3.

My Currency Converter

XE Currency

XE Currency is an app that you will be suggested to install by many currency converter app users since it can work both offline and online. The app is available on both the Android and the iOS. Since it also works while you are offline, all you need to do before going to another country is to download the exchange rates, and you are all set.


Exchange Rates

The most significant advantage that the Exchange Rates app offers is that they do not have ads on the interface. A built-in calculator and an integrated multiple currency display, the app also boasts of having the ability to display and convert any currency in the world. The exchange rates also update in real time, and if you’d like to know more about the currency itself, the app also offers a Wikipedia link of any currency.

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