Generate various hashes
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Recently shipped improvements
SHA-1 is vulnerable to collision attacks and should not be used for security purposes. Use dedicated algorithms like bcrypt, scrypt, or Argon2 for password hashing.
160bit (40hex) - Not recommended for security
256bit (64hex)
384bit (96hex)
512bit (128hex)
A Hash Generator is a cryptographic tool that transforms any input data — text or files — into a fixed-length string of characters called a hash value or digest. Hash functions are one-way operations: you can generate a hash from data, but you cannot reverse-engineer the original data from the hash. This tool supports SHA-1, SHA-256, SHA-384, and SHA-512 algorithms using the browser's native Web Crypto API, ensuring fast and secure computation. Hash values are essential for verifying file integrity, detecting data tampering, generating cache keys, and securing digital signatures.
Select input method
Enter a string directly in the Text tab, or select a file for which you want to calculate the hash value in the File tab.
Enter Data
Just enter text or select a file and the results of all hash algorithms will be automatically calculated.
Check and copy results
The hash values SHA-1, SHA-256, SHA-384, and SHA-512 are displayed simultaneously. Click the copy button next to the required hash value to copy it to your clipboard.
Integrity Verification
Generate a hash for the downloaded file and compare it with the checksum provided by the distributor to confirm that the file has not been tampered with.
SHA-256 generates a 256-bit (64 character) hash value, and SHA-512 generates a 512-bit (128 character) hash value. Although SHA-512 produces longer hashes and is therefore more collision resistant, SHA-256 provides a sufficient level of security for most uses. On 64-bit systems, SHA-512 may be faster than SHA-256.
In 2017, a Google research team demonstrated SHA-1 collisions (two different inputs produce the same hash value). This can lead to security threats such as digital signature forgery, so SHA-256 or higher should be used for security purposes. Use SHA-1 only for non-secure purposes, such as file identification or cache keys.
No. The hash function is a one-way function, and it is computationally impossible to invert the original data from the hash value. This is a key property of hashes and why we store the hash value instead of the original when storing passwords.
When downloading software, files may be damaged in transit or may have malware inserted into them. By comparing the SHA-256 checksum provided by the distributor with the hash value of the downloaded file, you can verify the integrity and authenticity of the file, enhancing security.
SHA-256 is a general-purpose hash function and is not suitable for password hashing. Its speed makes brute-force attacks easier. Passwords should use purpose-built, intentionally slow algorithms such as bcrypt, scrypt, or Argon2.