Latest update 29th March 2020
Required - Windows 64 bit; Internet connection
Not using Windows 64 bit? click here.
File size 65MB
Start calculator with Java™
If you are having Java on your system, you can try with Java™ Web Start version available from here.
Use the calculator with better user experience and smaller download size (only 2.8MB).

3 steps instruction

to get a calculator and make it work

1. download the calculator by clicking the button above and confirm it is working on your system
2. register account and select credentials
3. select subscription plan from any available

Step no. 1 - Download the calculator

Just click the button above and download button on the opened window afterwards, and wait for download to complete, as it can take a while. After that, initiate the installation as for any other application.

After the installation you will be asked to register an account and create username and password.

Step no. 2 - Register your new account

Register your account on registration page. Select a user name, password and enter valid email. You will instantly receive registration confirmation email to confirm your registration and activate account. Click on the link provided in the activation email to activate account. You will once more receive an instant email confirming that your account is activated. This time no action is required from you.

Step no. 3 - Select an appropriate subscription

Subscribe to full service at subscription page. Select one out of three available subscription plans. Each plan is time limited and gives you access to all services on this web site.