Generate hashes without sending your data anywhere
A hash function takes any input — a password, a file's contents, a piece of text — and produces a fixed-length string that acts as a kind of fingerprint for that exact data. This tool computes four of the most common hash types directly inside your browser, using the same cryptographic engine browsers rely on for their own security features, so nothing you type is ever transmitted anywhere to generate the result.
How it works
Type or paste any text into the box, and all four hash types — MD5, SHA-1, SHA-256, and SHA-512 — update instantly below it. Click the copy icon next to any result to grab that specific hash.
Choosing the right hash type
- SHA-256 / SHA-512 — the right choice for anything security-sensitive. Both remain cryptographically strong and are widely used in modern systems, digital signatures, and blockchain applications.
- MD5 — fast and still common for basic file checksums and non-security identity checks, but not appropriate where actual security matters, since it's known to be vulnerable to deliberately engineered collisions.
- SHA-1 — similarly deprecated for security use, included mainly for compatibility with older systems and tools that still expect it.
Common uses
Verifying that a downloaded file matches its publisher's published checksum, generating a quick unique identifier for a piece of text or data, checking whether two files are byte-for-byte identical without comparing them directly, and testing or debugging code that itself works with hashes are some of the most common reasons people reach for a hash generator like this one.
Your data stays private
Nothing you type into this tool is sent anywhere — every hash is computed directly in your browser. See our Privacy Policy for full details.
Frequently asked questions
+Is this hash generator really free, with no sign up?
Yes. There's no account and no limit on how many hashes you can generate.
+Which hash types are supported?
MD5, SHA-1, SHA-256, and SHA-512. The SHA family is computed using the browser's own built-in Web Crypto API — the same trusted implementation browsers use for security-sensitive operations — while MD5 is computed with a standard implementation, since browsers don't provide MD5 natively.
+Is my text sent anywhere to generate the hash?
No. Every hash is computed directly in your browser — nothing you type is ever uploaded or logged.
+Which hash type should I use?
For anything security-related — passwords, digital signatures, verifying data integrity where trust matters — use SHA-256 or SHA-512. MD5 and SHA-1 are both considered cryptographically broken for security purposes (they're vulnerable to deliberate collisions) and are included here mainly for compatibility with older systems, checksums, or non-security use cases like quickly checking whether two files are identical.
+Why does the same input always produce the same hash?
That's the defining property of a hash function — it's deterministic, so identical input always produces identical output. This is exactly what makes hashes useful for verifying that a file or piece of text hasn't been altered: if you hash it again later and get a different result, something changed.