Introducing SHA-256 Generator

SHA-256 Generator is now live on Tools.Town — a tool that computes the SHA-256 cryptographic hash of any text input using the browser’s native Web Crypto API, with hex and Base64 output formats.

Generate hashes for file verification, API signing, token generation, and cryptographic applications — entirely in your browser.

What Does It Do?

SHA-256 Hash

Computes the 256-bit hash as a 64-character hexadecimal string using the native Web Crypto API.

Base64 Output

Also outputs the hash as Base64 — the format required for HMAC Authorization headers and many APIs.

Instant

Hash updates in real time as you type. No submit button — the result is always current.

SHA-256 is computed using the browser’s built-in Web Crypto API — no custom crypto code, no server calls. Your text never leaves your device.

How It Works

Enter text

Type or paste the message you want to hash. The hash updates with every keystroke.

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Choose format

Select hex (64 characters) or Base64 depending on your use case.

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Copy hash

Click Copy to grab the hash value for use in your application, API call, or verification.

Why We Built It

SHA-256 hashes come up constantly in development — verifying a file download, computing an HMAC for an API signature, fingerprinting a document, or debugging a signing implementation. SHA-256 Generator handles this in a few seconds, in the browser, with the Web Crypto API for cryptographic correctness.

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Free Tool

No sign-up In-browser

SHA-256 Generator

Compute SHA-256 hashes with hex and Base64 output. Uses browser Web Crypto API — no server calls.

SHA-256 cryptographic hashHex & Base64 outputWeb Crypto APIReal-time on-type

Generate SHA-256 Hash

For non-security checksums, MD5 Generator is faster. For more, see all developer tools.

Frequently Asked Questions

What is SHA-256 used for?

SHA-256 is used for digital signatures, certificate fingerprints, file integrity verification (checksums), HMAC signing, and as a building block in many cryptographic protocols including Bitcoin.

Is SHA-256 safe for passwords?

No. SHA-256 alone is too fast — it's vulnerable to brute-force and rainbow table attacks. Use bcrypt, scrypt, or argon2 for password hashing, which are deliberately slow.

What output formats are available?

Hexadecimal (64-character lowercase) and Base64 — both are common in different contexts (hex for checksums, Base64 for HTTP headers and APIs).

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Introducing SHA-256 Generator — Now Live on Tools.Town