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Search for Calculators

On-line Stats

  • Created Formulas: 667
  • Created Widgets: 5651
APIs, Widgets & Apps
"Making the complex simple"


We have rest-APIs for the following products; formula calculator api, converter api and rate table api. The service is free for up to 10 calls per minute and 150 calls per day. If you need more calls please look at our licenses. For converter APIs you can use either javascript or php, when you integrate the code in your application. The pros are that you will have a seamless integration with your webpage and with your own css, sending only the data needed for the calculation or conversion.

Test Code

To get a test code go to Calculator Form and choose a calculator widget. Then fill in your email and web-address to get the code for your api. There is no need to design your widget, since you will use your own css. Copy and paste the code into your webpage and design the form with your css rules.