Frequently Asked Questions - User

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

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

-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.

+How do I know if I have the latest version of a tool or calculator?

-Hit refresh or reload to ensure you have the latest version of a tool or calculator.

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

-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.

+How do I use the calculators and tools off-line?

-Save the webpage of the calculator and tool to your device. This varies by browser but can be accomplished by clicking on the menu and selecting "save page" or by right clicking and selecting "save page as".

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

-The quickest way to find out is to point the browser of your device to and select one of our tools.

Frequently Asked Questions - Website Administrator

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

-Please link to

+I would like to host your calculators and tools on my site - How would this work?

-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.