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How to determine the entropy of a password

Fresh3 days ago
Mar 15, 20263789 views
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Problem

How can I tell if a password has good enough entropy to prevent brute-forcing on a realistic timescale? For example, if I have the following password, how can I determine if it is strong enough to prevent brute forcing?

Error Output

"?e&ye&ga!ruaa!na!e%ta!e%rc#Iod$woH"2245

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Fix for: How to determine the entropy of a password

Low Risk

There's a site that can give you an estimated entropy figure for a password input. For the above example it suggests ~247 bits. You can get a very rough guess of how long it will take to crack on How Secure Is My Password. It suggests it would take …

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