Be the most beautiful mind on the block with these online calculator tools and free downloads.

My older brother Matthew is a math freak. He graduated from Georgia Tech with a mathematics degree to prove to everyone just how smart he is. To make me fully aware of how great he is, he tries to get me to calculate computer factors such as bytes to megabytes. And he makes me crunch other impossible numbers like the interest on my car payments, and figure cosines, sines, tangents, square roots, and exponents for things I don't even care about.

Well, I'm not quite the beautiful mind he is so I can never answer his daunting questions. That is, until I found My ParenTime Calculators. Dozens of useful calculators are available here, from HTML metatag generators to metric conversion calculators.

Another useful calculator I've found is this cost-of-living and salary comparison calculator. If you're thinking of moving, use it to see how your salary compares in another locale, and what you'll need to earn in order to meet the same standard of living you currently enjoy.

If you don't want to use the Web to calculate everything for you, try downloading one of these smart programs.

You can easily convert and calculate units of measurement, including mass, area, volume, angles, and other more obscure numbers with the free ESB Unit Conversion Utility.

Finally, if you need to see how many shopping days are left until Christmas, calculate the days, weeks, months, or years between any two dates with this free Date Calculator.