Compute MD5, SHA-1, SHA-256, and SHA-512 hashes. 100% local — no data uploaded.
All hashing is performed locally in your browser — no input is uploaded. MD5 and SHA-1 are cryptographically broken and must not be used for security-sensitive purposes. Use SHA-256 or SHA-512 for any security application.
A hash converts any input size to a fixed-length digest. It is one-way (you cannot undo it), deterministic (same input → same output), and avalanche-sensitive (a one-bit change scrambles the whole result).
SHA-256 always returns 64 hex characters (256 bits), whether you hash one word or a whole disk image. Hashing 'Hello World!' with SHA-256 gives 7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069.
Paste Hello World! into the tool and click Compute Hashes to verify the SHA-256 output below.
A hash is a fixed-size fingerprint of data. Paste any text and the tool instantly computes MD5, SHA-1, SHA-256, and SHA-512 hashes using the Web Crypto API.
FreeToolHub Hash Generator is a free browser-based tool that computes MD5, SHA-1, SHA-256, and SHA-512 hashes, no signup, no upload.
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes, 100% in-browser, instant. Free.
This tool computes cryptographic hashes of any text across the four workhorse algorithms: MD5, SHA-1, SHA-256, and SHA-512. Paste input once and all four digests appear simultaneously in hexadecimal, ready to copy. It serves the everyday verification jobs — confirming a downloaded file's checksum, generating cache keys, deriving identifiers for deduplication — and the comparison runs entirely in your browser using the Web Crypto API, so sensitive values like pre-hashed credentials never transit a network.
Developers verify checksums published alongside downloads and releases, generate deterministic keys for caching and dedup, and produce content hashes for change detection in pipelines. Security practitioners demonstrate hash behavior and compare known-bad digest lists. Data engineers hash PII columns before sharing samples, replacing emails and IDs with stable non-reversible tokens. Students learning cryptography see, concretely, how one character of change cascades into a completely different digest — the avalanche effect — across all four algorithms at once.
(1) Paste your text into the input. (2) All four digests compute instantly — MD5 and SHA-1 from the legacy algorithms still used for checksums, SHA-256 and SHA-512 from the modern SHA-2 family via Web Crypto. (3) Copy any digest with one click; hex output uses lowercase convention. The tool processes locally, supports multi-line input, and updates live as you edit. Note it hashes text encoded as UTF-8; for file hashing, use the file-mode tools, since files require binary reading rather than text encoding.
The four algorithms split into legacy and modern tiers. MD5 is broken for security purposes — practical collision attacks exist — but remains fine for non-adversarial checksums and legacy system compatibility. SHA-1 is also collision-broken as of 2017 and should not protect anything new. SHA-256 and SHA-512, the SHA-2 family, remain collision-resistant and are the correct choice for signatures, certificates, integrity verification against tampering, and anything cryptographic. Practical guidance: use SHA-256 by default; keep MD5 only for matching values a legacy system already stores. One boundary worth remembering: hashes are not password storage — plain MD5 or SHA-256 of a password falls to GPU cracking and rainbow tables; use bcrypt, scrypt, or Argon2 with salts for credentials. This tool exists for verification and identification, not password handling.
It computes MD5 (128-bit), SHA-1 (160-bit), SHA-256 (256-bit), and SHA-512 (512-bit) hashes using the Web Crypto API. A 1MB file hashes in under 10ms for SHA-256. Output is available in hexadecimal or base64 encoding. All computation is local—no data is transmitted for hashing.
MD5 is broken for security purposes (collision attacks demonstrated since 2004) but remains useful for file integrity checksums. SHA-256 is the current standard for password hashing (with salt), digital signatures, and blockchain. For password storage specifically, use bcrypt or Argon2—this tool is best for file verification and API signature generation.
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