Not your average calculator site. While Calculate This! does provide standard calculators, there are even more calculators that you probably didn't know you even needed.
Need to time how long something took to complete? The handy little online stopwatch will calculate the time spent from the moment you push start to when you press stop. 
Chmod calculator. This is useful when setting permissions on files using FTP. 
Get the circumference of a circle by entering its radius. 
Do you ever wonder how much you must pay for fuel/gas in a year? Use this simple gas cost calculator to find out how much you spend or calculate fuel/gas costs, cost average monthly and annually. In addition, this... more 



This Currency Converter provides current currency values direct from the Google Currency Converter. Perform currency and foreign exchange calculations using actual rates. The Currency Converter contains the top 94... more 
This Length Distance Converter will convert any value you enter into 8 other measurement. Convert Millimeter (mm), Centimeter (cm), Inch (in), Feet (ft), Yard (yd), Meter (m), Kilometer (km), Mile (mi), and Nautical Mile... more 

This utility will convert a temperature for fahrenheit, celsius and Kelvin (just in case you might need Kelvin). To convert from the temperature Fahrenheit to Celsius manually, first subtract 32, then multiply by... more 
Calculate what the percentage of any value is. 
This loan calculator will help you determine the monthly payments based on the loan amount, months of repayment and interest rate. 

This online tool will allow you to convert decimal values to Binary, Hexadecimal, and Octal values. 
This online tool allows you to convert Byte (B), Kilobyte (KB), Megabyte (MB), Gigabyte (GB), Terabyte (TB), Petabyte (PB), Exabyte (EB), Zettabyte (ZB), and Yottabyte (YB) 



