Is my text sent to your servers?

No. All hashing is done locally in your browser using the CryptoJS library. Your data never leaves your device.

What is the difference between MD5 and SHA-256?

MD5 produces a 128-bit hash and is considered cryptographically broken for security-sensitive use. SHA-256 produces a 256-bit hash and is the current industry standard for secure hashing and digital signatures.

Which algorithm should I use?

For general secure use SHA-256 is recommended. For maximum security choose SHA-3 (256 or 512). Avoid MD5 and SHA-1 for security-critical applications as they have known vulnerabilities.

Are the generated hashes reversible?

No. Hash functions are one-way — the same input always produces the same hash, but you cannot derive the original text from its hash output.

What is a hash used for?

Hashes are used for password storage, data integrity verification, digital signatures, file checksums, and deduplication to ensure data has not been tampered with.

8 algorithms Instant — under 25ms 100% browser-based Always free

Free Online Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 and SHA-3 hashes instantly in your browser — no uploads, no account, 100% private.

Generate a Hash

Enter text0 / 10,000

Your text is hashed locally — never sent to any server.

Hash algorithm

How to generate a hash

Enter your text

Type or paste any text into the input box — passwords, messages, or any content up to 10,000 characters.

Choose an algorithm

Select from MD5, SHA-1, SHA-256, SHA-512, or any SHA-3 variant depending on your security requirements.

Copy or download

Click Generate to get the hash instantly, then copy it to your clipboard or save it as a .txt file.

Supported algorithms

Algorithm	Output size	Use case	Security
MD5	128 bits (32 hex)	Checksums, file verification	legacy
SHA-1	160 bits (40 hex)	Legacy systems, Git	legacy
SHA-256	256 bits (64 hex)	Passwords, digital signatures	strong
SHA-512	512 bits (128 hex)	High-security applications	strong
SHA-3 (224)	224 bits (56 hex)	Compact secure hashing	strongest
SHA-3 (256)	256 bits (64 hex)	Modern secure applications	strongest
SHA-3 (384)	384 bits (96 hex)	High-assurance systems	strongest
SHA-3 (512)	512 bits (128 hex)	Maximum security workloads	strongest

Why use our hash generator?

100% private

Hashing runs entirely in your browser using CryptoJS. Your text is never transmitted to any server.

Instant — under 25ms

All 8 algorithms compute in milliseconds directly on your device with zero network latency.

8 algorithms

Covers MD5, SHA-1, SHA-256, SHA-512, and all four SHA-3 variants — from legacy to cutting-edge.

Copy & download

One-click copy to clipboard or save the hash and input as a plain .txt file ready to use anywhere.

Works on mobile

Fully responsive — works flawlessly on phones and tablets with no app to install.

Completely free

No account, no credits, no rate limits. Generate as many hashes as you need, forever free.

100K+

Hashes generated

Algorithms

<25ms

Processing time

100%

Free

Frequently asked questions

: No. All hashing is done locally in your browser using the CryptoJS library. Your data never leaves your device.
: MD5 produces a 128-bit hash and is considered cryptographically broken for security-sensitive use. SHA-256 produces a 256-bit hash and is the current standard for secure hashing and digital signatures.
: For general secure use SHA-256 is recommended. For maximum security choose SHA-3 (256 or 512). Avoid MD5 and SHA-1 for security-critical applications as they have known vulnerabilities.
: Currently this tool hashes text input only. For file hashing, paste the file contents or use our dedicated file hash utility.
: No. Hash functions are one-way — the same input always produces the same hash, but you cannot derive the original text from its hash.
: Hashes are used for password storage, data integrity verification, digital signatures, file checksums, and deduplication to ensure data has not been tampered with.

What is a cryptographic hash function?

A cryptographic hash function takes an input of any length and produces a fixed-length output called a hash or digest. The output looks like random data, but the same input always produces the same output. Even a one-character change in the input produces a completely different hash — this is called the avalanche effect. Hash functions are one-way: it is computationally infeasible to reconstruct the original input from the hash output.

MD5 vs SHA-1 vs SHA-256 vs SHA-3: which should you use?

MD5 (128-bit) and SHA-1 (160-bit) are considered cryptographically broken and should not be used for security-sensitive tasks like password storage or digital signatures. They are still fine for non-security uses like checksums and cache keys. SHA-256 and SHA-512 are part of the SHA-2 family and remain the current industry standard for secure hashing. SHA-3 is a completely different algorithm family based on the Keccak sponge construction and is considered future-proof against quantum computing advances.

Common uses for hash generators

Password hashing stores a hash of the password rather than the password itself, so a database leak does not expose user credentials. File integrity verification compares hashes before and after transfer to confirm no data corruption or tampering occurred. Digital signatures hash a document and then encrypt that hash with a private key, allowing anyone to verify authenticity. Git uses SHA-1 (and is migrating to SHA-256) to create unique identifiers for every commit and file in a repository.

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