With Vaisala Humidity Calculator it is easy to find out the humidity level if we know certain parameters. This is an Adobe Flash Player-based tool with two different categories of finding out humidity, Basic and Advanced. Basic calculation is just based on temperature, relative humidity and dew point, whereas the Advanced calculation would seek information like Pressure, Gas Type, PPM, Absolute Humidity, Mixing ratio, Water content, and Wet bulb along with basic parameters. If the user knows various parameters asked in the tool, an accurate value of Humidity can be calculated. This tool is available in more than 8 different languages including French, Portuguese and Soumi. This is a free tool and its installation is very easy. As it is based on Adobe Flash, it is highly compatible with most of the Windows operating systems like Vista, XP, 98 and 2000. If other parameters are known, one can also find out wet bulb temperature. This tool supports higher temperature range up to 373 Celsius degrees. An advanced user can also use this tool as a converter between various parameters.