Online Hash Generator - Generate MD5, SHA-256 & SHA-512
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text. Runs entirely in your browser — no data sent to any server.
Instantly compute cryptographic hash digests for any input string using the most common algorithms: MD5, SHA-1, SHA-256, SHA-384, and SHA-512. SHA-family hashes use the browser's native Web Crypto API for maximum performance and correctness. MD5 is implemented in pure JavaScript with no external dependencies. Output can be displayed as a lowercase hex string (the standard format for checksums and fingerprints) or as a Base64-encoded string. All computation happens locally in your browser — your input never leaves your device. Useful for verifying file integrity, generating content fingerprints, testing hash-based authentication flows, and learning how different algorithms compare in output length and collision resistance.
How to use
- 1
Type or paste your input
Enter any text in the input area. The hash updates live as you type.
- 2
Choose an algorithm
Select MD5, SHA-1, SHA-256, SHA-384, or SHA-512 using the toggle buttons.
- 3
Pick an output encoding
Switch between Hex (default, lowercase hexadecimal) and Base64 output formats.
- 4
Copy the result
Click Copy to copy the hash to your clipboard. Your data never leaves the browser.
FAQ
Q.Which algorithm should I use?
For security-sensitive use cases, use SHA-256 or SHA-512. MD5 and SHA-1 are cryptographically broken and should only be used for non-security purposes like checksums or legacy compatibility.
Q.Is my input sent to a server?
No. All hashing runs entirely in your browser using the Web Crypto API (for SHA) and a pure-JS MD5 implementation. Nothing is transmitted.
Q.What is the difference between Hex and Base64 output?
Both represent the same underlying bytes. Hex uses 0-9 and a-f characters (two chars per byte), producing a longer string. Base64 uses 64 characters and is more compact, commonly used in HTTP headers and data URIs.
Q.Why does the same text always produce the same hash?
Hash functions are deterministic — the same input always produces the same output. This property makes them useful for integrity checks. Even a single character change produces a completely different hash.
Q.Can I hash binary data or files?
This tool hashes text strings encoded as UTF-8. For binary files, you would need a dedicated file-hashing tool. The text input is converted to UTF-8 bytes before hashing.