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Password Possible Options Calculator

This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to provide the number of possible options for a password of up to X characters long, with a minimum of Y characters required, from a possible pool of Z characters. The length is the potential of the field; most are 8 characters but you may change as needed. Most passwords are a minimum of 4 characters but our default is zero (0) meaning you don't have to actually have a password. The default character pool is composed of numbers and letters. If the password is only numbers, the potential character pool is 10 (0-9). If the password is only letters, the character pool is 26 (A-Z) upper or lower case accepted as the same. If upper and lower case are different, the character pool is 52 instead of 26. If the pool is alphanumeric, add 10 to the character pool; each group is additive. If your password allows for keyboard entered characters, such as $, @ or the underscore character (as well as others), that adds 32 more characters to the possible pool on MOST keyboards. Do NOT consider spaces (although some systems allow them); we consider those based on the minimum number of characters required. Enter the values then click on Calculate. The maximum number of password possibilities for the values you entered is returned. If you had forgotten your password and were trying to guess it, and you guessed a different password each try, this is the maximum number of attempts until you guess it correctly. It does not mean it will actually take you that many tries; however, it could. Since we are dealing in probability, it is probable that the number returned will be larger than you expected and will probably be in scientific notation. You may wish to take note of our scientific notation calculators, Decimal To Scientific Notation Converter and Scientific Notation To Decimal Converter. Discovery.Com has an excellent section on learning scientific notation. If you would like to have a password generated for you, please try our Secure Password Creator.

Designation
Number
Required Data Entry
Maximum Number Of Characters In The Field Characters
Maximum Character Pool Size Characters
Minimum Characters Required Characters
   

Calculated Results
Maximum Number Of Options Possible
Updated 8.17.11


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