SHA-1 hash for « 00000000000000000000000000000000 »

The SHA-1 hash of:
00000000000000000000000000000000
is:
91d3d1f86024e49f0e35314258b357a8944068a1

You can attempt to reverse the SHA-1 hash which was just generated, to reverse it into the originally provided string:

Reverse a SHA-1 hash

Feel free to experiment SHA-1 hashing with more strings. Just enter a new string and submit the form to convert it into another SHA-1 hash.

Convert a string to a SHA-1 hash