How do I use this SHA-256 hash generator?

Type or paste your text—or choose a file—then click Compute (or press Ctrl/Cmd+Enter). The SHA-256 hex digest appears instantly below. All hashing happens locally in your browser.

Does my text or file get uploaded?

No. Hashing uses the WebCrypto API in your browser. Nothing is sent to a server.

Can I hash large files?

Yes, up to your browser’s available memory. For very large files, use a desktop tool that supports streaming.

Is SHA-256 reversible?

No. SHA-256 is a one-way cryptographic hash, not encryption; you cannot get the original content back from the hash.

What can I use SHA-256 for?

Typical uses: verifying file integrity, generating content fingerprints, or storing checksums.

Is my data sent to a server?

No — uses native WebCrypto API. Everything runs 100% in your browser.

Can I hash files larger than 100MB?

Yes — streaming support via File API. Limited only by your browser memory.

Does it support SHA-1 or MD5 too?

This tool is SHA-256 only — the current secure standard. Use dedicated tools for legacy hashes.

Why use SHA-256 instead of MD5?

SHA-256 is cryptographically secure and collision-resistant. MD5 & SHA-1 are broken.

Cryptographically Secure

SHA-256 Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes for any text or file. Verify integrity, compare checksums, and inspect data — all in your browser.

Algorithm

Input text 0 chars · 0 bytes Output encoding

Generated Hash SHA-256

Hex length

256

Bits

—

Compute time

Drop a file here

or click to browse — files are read locally, never uploaded

Choose file

filename.zip

—

Reading file…

File Hash SHA-256

—

File

—

Size

—

Compute time

Source (text or file) 0 chars

Expected hash paste hex or base64

About SHA & this tool

How hashes work and what to use them for.

What is a hash?

A hash is a fixed-size fingerprint of any input. Change a single byte and the hash changes completely. Same input always produces the same hash.

SHA-256 specifics

SHA-256 produces a 256-bit (32-byte) digest, typically shown as 64 hex characters. Part of the SHA-2 family standardized by NIST.

Common uses

File integrity checks, password storage (with salt), digital signatures, blockchain, Git commits, certificate fingerprints.

Why not MD5/SHA-1?

MD5 and SHA-1 are cryptographically broken — collisions can be engineered. SHA-1 is included here for legacy verification only.

Native & secure

100% local

Files are read into memory and hashed in your browser. Nothing is uploaded to any server.