Security & Authentication Tools

MD5 Hash Generator

Instantly generate an MD5 hash of any text, right in your browser.

Enter text below to instantly generate its MD5 hash - entirely in your browser, nothing is sent to our servers.

Enter text

MD5 is not cryptographically secure and should never be used for passwords or security purposes - it's still useful for checksums and non-security data integrity checks.

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JustChecker builds tools that respect your data - this one never leaves your browser.

What Is MD5?

MD5 produces a 32-character hexadecimal hash from any input. It is still widely used for checksums and cache keys. This tool generates MD5 hashes in your browser.

When to Use It

To compare a file or text against a published MD5 checksum.
To create cache keys or match legacy systems that use MD5.

How to Use It

Enter the text.
Copy the hash.

Understanding the Result

The same text always produces the same MD5 hash. Letter case, spaces and line endings all change it.

Limitations

MD5 is cryptographically broken - collisions can be created deliberately. Do not use it for passwords or security. Use the SHA-256 Hash Generator for integrity checks.

Examples

Input	MD5
(empty string)	`d41d8cd98f00b204e9800998ecf8427e`
`hello`	`5d41402abc4b2a76b9719d911017c592`
`Hello`	`8b1a9953c4611296a827abf8c47804d7`

Changing one letter's case produces a completely different hash - that sensitivity is what makes hashes useful as fingerprints.

Still Fine For

Detecting accidental corruption when a publisher lists an MD5 checksum.
Cache keys, ETags and de-duplicating files you already trust.
Gravatar-style lookups and legacy systems that require MD5.

Never Use It For

Passwords. MD5 is extremely fast, so leaked MD5 password hashes are cracked at billions of guesses per second. Use Argon2id or bcrypt - see bcrypt vs Argon2 vs scrypt vs PBKDF2.
Digital signatures or security checks, because attackers can craft two different files with the same MD5.

Why Your Hash Does Not Match

A trailing newline, a space, or Windows line endings (\r\n) change the result. echo "hello" | md5sum hashes hello\n, not hello - use echo -n.

For integrity checks use the SHA-256 Hash Generator.

Frequently Asked Questions

No - this tool runs entirely in your browser using JavaScript. Nothing you type is transmitted anywhere.

No - MD5 is cryptographically broken and should never be used for passwords or security-sensitive purposes. It's still commonly used for non-security checksums, like verifying a downloaded file wasn't corrupted.

For password hashing, use a dedicated algorithm like bcrypt or Argon2. For general-purpose cryptographic hashing, use our SHA-256 Hash Generator instead.