Calculate MD5 Hash – Free Online MD5 Hash Generator
Compute MD5 hash from text in your browser. No uploads, no sign-up. Use for checksums, cache keys, and legacy compatibility.
What is the MD5 Hash tool?
This tool computes the MD5 hash of any text. MD5 produces a 128-bit (32-character hex) hash. It is widely used for checksums and legacy systems but not for security (passwords, signatures). All hashing runs in your browser.
Key features
- Client-side — Your text is never sent to a server.
- UTF-8 input — Any string. Empty input gives the MD5 of the empty string.
- Instant — Hash updates as you type.
- Copy — One-click copy.
How to use
- Open Calculate MD5 Hash.
- Paste or type your text.
- Copy the MD5 hash. Use for checksums, ETags, or legacy APIs as needed.
When to use MD5
- Checksums — File integrity, download verification.
- Cache keys — Content-based keys (e.g. CDN, build caches).
- Legacy systems that require MD5. For new security-sensitive use, prefer SHA-256 or SHA-512.
Limitations
MD5 is not secure. Do not use for passwords or cryptographic signatures. Collisions are known. Use only for non-security checksums or legacy compatibility.
Frequently asked questions
What is MD5 hash used for?
MD5 produces a 128-bit hash. It is used for checksums, cache keys, and legacy compatibility. Do not use for passwords or security.
What input does the tool accept?
Any text. Input is UTF-8. Empty input produces the MD5 of the empty string.
Is MD5 secure?
No. MD5 has known collisions. Use SHA-256 or SHA-512 for security. MD5 is fine for non-security checksums.
Is my data sent to a server?
No. Hashing runs in your browser. Your text never leaves your device.
When should I use MD5?
For checksums, ETags, or legacy systems that require MD5. For new security-sensitive use, prefer SHA-256 or bcrypt.
Why does my hash not match?
Ensure identical input and UTF-8 encoding. Trailing newlines or spaces change the hash.
Try the tool
Use Calculate MD5 Hash for MD5 checksums. For more algorithms see Hash Generator, SHA-256, or All Hashes.
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