Frequently Asked Questions - User

Click on the questions below for more information.
Have a question that you don't see below? Contact Us!

Q1) I clicked on Example but nothing happened. What could be wrong?

A1) For full functionality of this site it is necessary to enable JavaScript. Here are the instructions on how to enable JavaScript in your web browser.

Q2) Why do I get the following Message Internet Explorer restricted this webpage from running scripts or ActiveX Controls?

A2) The security settings for Internet Explorer are preventing the tools from running since they are based on javascript which must be active. Click on Allow blocked content to solve the issue.

Q4) How do I use the calculators/tools off-line?

A3) Save the webpage of the calculator/tool when you are using it.
For Example - In Firefox - Select File and then Save Page As - leave the file name as is and choose the directory of your choice to save it in. Then when you double click on this file from your computer it will run in your browser - you do not need to be connected to the internet.
In Internet Explorer - Click on File and then Save As.
In Google Chrome - Right Click the screen and click on Save As.
In Safari - Right Click the screen and click on Save Page As.
In Opera - Hit CTRL S to bring up the save as dialog.
We recommend saving the file in htm or html file format.

Q5) Can I use the calculators/tools on devices other than a computer (Mobile device, Phone, Tablet, SmartTV, Game System)?

A5) Yes. The only limiting factors are the degree that the device's browser supports HTML/Javascript and if it is readable when shown on the device's screen.
The best way to find out - is to try our calculators/tools on your device.

Frequently Asked Questions - Website Administrator

Q1) I am a website administrator and would like to link to your page - what url should I use?

A1) Please link to

Q2) I would like to host one of your calculators/tools on my website - How does this work?

A2) You may link directly to our tools and calculators - through two browser window methods 1) iframe 2) target="_blank" - from your website. You may not locally host or modify any of our tools.