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Hash Generator Online — MD5, SHA-1, SHA-256, SHA-512 in One Tool

Generate cryptographic hashes from any text or file: MD5, SHA-1, SHA-256, and SHA-512 — all at once. The tool uses the browser's Web Crypto API (and a vetted polyfill for MD5/SHA-1), so hashing is fast and your input never leaves your device. Use it for checksums, integrity verification, or comparing fingerprints during a release.

Features

  • Four algorithms at once

    See MD5, SHA-1, SHA-256, and SHA-512 outputs for the same input simultaneously.

  • Text or file input

    Hash any string, or drop a file to compute its checksum locally.

  • Compare mode

    Paste an expected hash to verify whether the computed hash matches — green check or red mismatch.

  • Browser-native crypto

    SHA-2 hashes use Web Crypto for speed. Files are streamed in chunks to handle large inputs.

How to generate a hash online

Hash any text or file in two steps.

  1. Paste text or upload a fileDrop your input into the text box, or pick a file to hash its bytes.
  2. Read the four hashesMD5, SHA-1, SHA-256, and SHA-512 update on every change.
  3. Copy or compareCopy the hash you need, or paste an expected value to verify a match.

Examples

Hash a short string

Input
password
Output
MD5:     5f4dcc3b5aa765d61d8327deb882cf99
SHA-1:   5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8
SHA-256: 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8

Frequently Asked Questions

Is MD5 still safe to use?
MD5 is broken for security purposes — practical collision attacks exist. It is still acceptable for non-security uses like file checksums on trusted sources. For passwords, signatures, or integrity in adversarial settings, use SHA-256 or SHA-512.
Which hash should I use for passwords?
None of these directly. For passwords, use a dedicated KDF like Argon2, bcrypt, or scrypt — they are intentionally slow to defeat brute force. Plain SHA-256 is too fast to hash passwords safely.
What is the difference between SHA-256 and SHA-512?
Both belong to the SHA-2 family. SHA-256 produces a 256-bit digest; SHA-512 produces 512 bits and is slightly faster on 64-bit hardware. Both are secure for general cryptographic use.
Can hashes be reversed?
No. A cryptographic hash is a one-way function. Given the hash, you cannot recover the input — except via brute force (trying every possible input), which is why long random salts and KDFs exist.
Is the file hash computed in my browser?
Yes. The file is read in chunks via the File API and hashed locally using the Web Crypto API. Nothing is uploaded.
How big a file can I hash?
There is no fixed limit. The tool streams the file rather than loading it all at once, so multi-gigabyte files are feasible on modern machines.