Free Hash Generator: MD5, SHA-256, SHA-512 Online
Need to quickly make a hash for a password, check the integrity of a file, or make a checksum? A hash generator uses algorithms like MD5, SHA-256, or SHA-512 to take any text and turn it into a hashed version. It's a tool that developers and sysadmins use all the time. I have this saved as a bookmark because I use it more often than you might think: to compare file checksums, make test hashes for development, and check API signatures.
It only takes two seconds.
What is hashing
Hashing is a one-way function that turns any input into a string of characters of a set length. You can't go back to the original input, but the same input always gives the same output. That's why it's good for security. You can choose from a number of algorithms with different output lengths and levels of security with a hash generator.
MD5, SHA-1, SHA-256, and SHA-512 are the most common ones you'll see.
What kind of algorithm should you use
MD5 is quick and makes a 128-bit hash. Not safe for passwords anymore, but still good for checksums and other uses that don't need security. SHA-1 is a hash with 160 bits. Also not recommended for security reasons, but you can still find it in old systems.
SHA-256 is a hash with 256 bits. A member of the SHA-2 family. Most security programs use this these days. SHA-512 is a 512-bit hash.
When you need the most security, use this one. It's longer and safer than SHA-256. SHA-256 will be the best choice for most things in 2026. Safe enough for real use, widely supported, and quick to calculate.
What Hash Generation Is Used For Hashing is used in a lot of tech: File integrity: download a file, hash it, and then compare it to the published checksum. If they match, the file hasn't been changed or damaged. Databases don't store plain text passwords; they store hashed passwords. (You should not use raw SHA-256 for password hashing, but bcrypt or argon2 instead.) API authentication—many APIs use SHA-256-based HMAC signatures. Data deduplication: hash files so you can find duplicates quickly without checking every byte.
A Note on Security: Hashing is not the same as encryption. You can't get the original data back from a hash. You can't decode a SHA-256 hash if someone gives it to you and asks you to do so. Hashing is meant to be one-way.
Also, MD5 and SHA-1 are known to have collision vulnerabilities, which means that two different inputs can give you the same hash. If you want to keep things safe, use SHA-256 or higher. You can use our hash generator right in your browser. You can type or paste your text, choose your algorithms, and get results right away.
Nothing is sent to any server.