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SHA-256 Hash Generator

Generate a SHA-256 hash from any text instantly in your browser — also supports SHA-1, SHA-384, and SHA-512. Private, fast, and free with no sign-up.

All tools
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SHA-256

🔒 Private by design

  • Your text is hashed locally in your browser with the Web Crypto API — nothing is sent to a server.
  • SHA-256 is the most widely used choice for checksums, integrity checks, and fingerprints.
  • Hashing is one-way: a hash cannot be reversed back into the original text.

Free SHA-256 Hash Generator

Generate a SHA-256 hash from any text instantly, right in your browser. Also supports SHA-1, SHA-384, and SHA-512, with an uppercase option and one-click copy. Your input never leaves your device — hashing happens locally with the Web Crypto API. No sign-up required.

What is a SHA-256 hash?

SHA-256 is a cryptographic hash function that turns any input — a word, a password, a whole file's contents — into a fixed 64-character hexadecimal string called a digest. The same input always produces the same hash, but even a one-character change produces a completely different result. It is part of the SHA-2 family designed by the NSA and is one of the most trusted, widely deployed hashing algorithms in the world.

What SHA-256 is used for

Hashing shows up throughout modern software and security:

  • File integrity — verify a download matches its published checksum.
  • Data fingerprinting — detect whether content has changed.
  • Digital signatures and certificates — SHA-256 underpins TLS/SSL and code signing.
  • Blockchain — Bitcoin and many other chains rely on SHA-256.
  • Deduplication and caching — use a hash as a unique key for content.

How to generate a SHA-256 hash

It could not be simpler:

  • Type or paste your text into the box.
  • Keep SHA-256 selected, or switch to SHA-1, SHA-384, or SHA-512.
  • The hash updates live as you type; toggle uppercase if you need it.
  • Click Copy hash to grab the result.

Is hashing the same as encryption?

No, and the difference matters. Encryption is two-way: with the right key you can decrypt the data back to its original form. Hashing is one-way: there is no key and no way to reverse a SHA-256 digest back into the original input. That is exactly why hashes are used to verify integrity and store password fingerprints — you compare hashes rather than recover the original value.

SHA-256 vs MD5 and SHA-1

MD5 and SHA-1 are older and faster, but both are considered broken for security because attackers can engineer collisions (two different inputs with the same hash). They are still fine for non-security checksums, but for anything involving trust or integrity, SHA-256 is the modern standard. SHA-384 and SHA-512 offer even longer digests for high-security needs.

Pro tip

To hash a password safely for storage, a raw SHA-256 is not enough on its own — use a slow, salted algorithm such as bcrypt or Argon2 so the hash resists brute-force attacks. SHA-256 is ideal for checksums, fingerprints, and integrity verification. Need a checksum for a file? Hash its contents and compare against the published value.

FAQ

Is this SHA-256 generator free and private?
Yes. It is free and runs entirely in your browser using the Web Crypto API. Your text is never uploaded or sent to any server.
How do I generate a SHA-256 hash?
Paste your text into the box and the SHA-256 hash appears instantly. You can also switch to SHA-1, SHA-384, or SHA-512, and copy the result with one click.
Can a SHA-256 hash be reversed or decrypted?
No. SHA-256 is a one-way function. There is no key and no way to convert a hash back to the original input. You can only compare hashes to check if two inputs match.
Is SHA-256 secure?
Yes. SHA-256 is currently considered secure and collision-resistant, which is why it is used in TLS certificates, code signing, and blockchains. Older algorithms like MD5 and SHA-1 are not secure for these purposes.
How long is a SHA-256 hash?
A SHA-256 hash is 256 bits, shown as 64 hexadecimal characters. SHA-1 is 40 characters, SHA-384 is 96, and SHA-512 is 128.
Should I use SHA-256 to store passwords?
Not on its own. For password storage use a slow, salted algorithm such as bcrypt or Argon2. SHA-256 is best for checksums, fingerprints, and integrity verification.
What is the difference between SHA-256 and MD5?
MD5 is older, faster, and cryptographically broken due to collisions. SHA-256 produces a longer digest and remains secure, making it the recommended choice for integrity and trust.

Related tools

Pro tip: pair this tool with Upside Down Text Generator and Text Similarity Checker for a faster SEO workflow.