MD5 & SHA1 Hash Generator
Generate MD5 and SHA1 cryptographic hashes instantly from any text string.
What is an MD5 Hash?
The MD5 (Message Digest Algorithm 5) is a widely known cryptographic hash function that takes an input string of any length and produces a fixed-size 128-bit hash value, typically rendered as a 32-character hexadecimal number. Even the slightest change to the input text will produce a completely different MD5 hash. Today, MD5 is primarily used as a checksum to verify data integrity—for example, to ensure a file hasn't been corrupted during a download or transfer.
What is a SHA-1 Hash?
SHA-1 (Secure Hash Algorithm 1) operates similarly to MD5 but produces a larger 160-bit (40-character) hash value. Originally developed by the NSA, it was a cornerstone of internet security for many years, used in SSL certificates, PGP encryption, and version control systems like Git. Like MD5, its primary use today is for verifying that data remains unchanged and authentic.
Important Security Notice
While our tool is perfect for generating MD5 and SHA-1 hashes for checksums, legacy system testing, and data verification, neither MD5 nor SHA-1 should be used to hash passwords or secure highly sensitive cryptographic data. Both algorithms have been proven vulnerable to "collision attacks," where malicious actors can find two different inputs that produce the exact same hash. For modern password hashing, we strongly recommend using Bcrypt.