Hash Generator

Paste any text and get its SHA-256, SHA-512, MD5, or SHA-1 hash instantly. The Web Crypto API handles everything locally — your input never leaves the browser.

Algorithm

Input Text

🔐 Hash Generator

Generate cryptographic hashes of your text using various algorithms including SHA-256, SHA-512, and more. All processing happens locally in your browser - no data is sent to any server.

How to generate a hash

Three steps. The algorithm choice is the only decision that matters.

01
Paste your input
Type or paste any text — a password, a file path, a message, a JSON string. The hash updates as you type.
02
Pick an algorithm
SHA-256 is the right choice for most things. Avoid MD5 and SHA-1 for anything security-related — both have known collision vulnerabilities. Use them only for non-security checksums.
03
Copy the hash
Click copy next to the output. You get a fixed-length hex string — same input always produces the same hash, different input produces a completely different one.

When hashing is the right tool

Verifying a downloaded file wasn't tampered with

Hash the file after downloading and compare it to the checksum published on the official site. If they match, the file is intact. If they don't, don't use it.

Checking your signing logic before deploying

Many APIs use HMAC-SHA256 to sign requests. Hash your payload here to verify your implementation produces the right output before it hits production.

Finding duplicate records without comparing full content

Hash each record and compare hashes. Two identical records produce identical hashes — much faster than comparing field by field.

Understanding why passwords should never be stored plain

Hash 'password123' and you get a 64-character hex string. The original is unrecoverable from the hash alone — that's why databases store hashes, not passwords.

Build artifact checksums

Hash your release binaries and publish the checksums in your release notes. Users can verify they downloaded the right file.

Frequently asked questions

Free, no account, no limits.

Nothing leaves your browser. The Web Crypto API handles all hashing locally on your device.

SHA-256 for anything security-related. MD5 and SHA-1 have known collision vulnerabilities — attackers can craft two different inputs that produce the same hash. Fine for non-security checksums, not for passwords or signatures.

No. Hash functions are one-way by design. You can't reverse a hash — only brute-force it by hashing guesses and comparing. That's why long, random passwords matter.

SHA-512 produces a longer hash (512 bits vs 256 bits) and is slightly faster on 64-bit processors. Both are secure. SHA-256 is more widely supported.

Two different inputs that produce the same hash. For MD5 and SHA-1, collisions can be engineered deliberately. For SHA-256 and above, no practical collision has ever been found.

Yes, on any modern phone or tablet browser.

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