Best Free Unit and Currency Conversion Program



Have you ever needed to convert feet into millimeters without looking for a table, or wanted to convert from one currency unit to another?

These are a few handy and free conversion programs which you might be looking for. If you do not like to install the programs but prefer to use web-based converters, there are also several online converters for conversion of currency or measurement units as well.


Rated Products


Offers conversions of more than 20 categories of measurement units and a user-defined unit.

Our Rating: 
License: Free
Convert units in 21 categories, intuitive interface with a custom unit and customizable category tabs.
Currency unit conversion is not included.
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Provides conversion among over 500 units in 20 different measurement categories.

Our Rating: 
License: Free (Limited features)
Converts 500 units in 20 measurement categories.
Category tabs are fixed and not customizable. Currency unit conversion is not included.
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A good alternative for a free unit converter complete with a currency exchange category.

Our Rating: 
License: Free
Convert between over 1,200 units of measurement in 33 categories. Currency exchange category available.
Currency rates were noted not up-to-date on first run after installation.
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Microsoft Calculator Plus  

Offers conversion of measurement units in 10 popular categories together with currency exchange.

Our Rating: 
License: Free
Measurement unit conversion with currency exchange category.
Updating exchange rates for the Euro only.
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Online Converters

Other than the programs running on your device, these are a number of web-based unit converters which you can access them via a browser online.

  • Digital Dutch Unit Converter is a good try. It comes with a cleaner web page, instant response and ease of use, with commonly used units available and divided into 16 categories.
  • George Lewe's webMeasure offers conversion of some simple units in linear, area, volume, liquid and weight. In addition, it has paper sizes, numeric systems (including Roman), clothing sizes and a few other miscellaneous measures. It is interesting and worth a try.
  • Web-based currency converters are also available, such as OANDA Currency Converter, one of the popular web tools for currency conversion with daily and historical rates for over 164 currencies, and is available in multi languages.
  • As an alternative, Bloomberg's online Currency Calculator provides intraday data with frequent updates.
  • To cover exchange rates for a selected period of time, Bank of Canada's online 10-year Currency Converter is a good try.



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