About Hash Generator (MD5, SHA-256)
This hash generator calculates the MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hash of your text at the same time. Type or paste, and all five results update as you go, each with its own copy button. Text is hashed as UTF-8, so the same string gives the same result as most programming languages and command-line tools.
Hashing happens in your browser: the SHA family uses the built-in Web Crypto API and MD5 is computed by code on the page, so your text is never sent anywhere. The tool hashes text only, not files, and does not offer HMAC or salting. Remember that even a single extra space or line break changes the whole hash.
How to use Hash Generator (MD5, SHA-256)
- 01
Type or paste text.
- 02
All hashes appear instantly.
- 03
Copy the one you need.
When to use it
- Comparing a computed checksum with the value published next to a text snippet or API example.
- Generating a SHA-256 value to use as a cache key or content fingerprint during development.
- Checking that your code produces the same MD5 or SHA output as a reference.
- Creating a quick hash of a string for test fixtures or documentation.
- Verifying whether two pieces of text are identical by comparing their hashes.
Frequently asked questions
Is MD5 secure?
No. MD5 and SHA-1 have known collision weaknesses, so they are fine for non-security checksums but must not be used for signatures or passwords. Prefer SHA-256 or stronger for anything security related.
Can I decode or reverse a hash?
No. A hash is a one-way function and cannot be turned back into the original text. Short or common inputs can sometimes be guessed by trying candidates, which is why plain hashes are unsuitable for storing passwords.
Why is my hash different from another tool?
Usually because of invisible differences: a trailing space, a line break, different letter case or a different encoding. This tool hashes the exact text as UTF-8 bytes, so make sure the other side does the same.
Can I hash a file with this tool?
No. It hashes text typed or pasted into the box. File hashing is not supported here, so use a local command-line tool for downloaded files and installers.
Which algorithm should I choose?
Use SHA-256 for most modern needs and SHA-512 or SHA-384 for longer digests. Keep MD5 and SHA-1 for compatibility with older systems or simple checksums where security does not matter.
Is the text I hash uploaded?
No. All five hashes are computed in your browser and the text is never sent to i40x or anyone else. The tool is free, has no limits and needs no account.