SHA-256 Generator: Create Secure Hashes Online
Hashing is how the internet verifies integrity without exposing content: a file's checksum, a password's stored form, a message's fingerprint. A SHA-256 generator turns any text into that fixed-length hash — and the best ones run entirely in your browser, so your secrets never leave your device.
What is SHA-256?
SHA-256 is the modern standard hash algorithm. It takes any input and produces a fixed 64-character hexadecimal fingerprint. It's one-way — you can't reverse the hash back to the original — which makes it ideal for checksums and password verification. SHA-512 is its stronger 64-bit sibling; SHA-1 and MD5 are older and faster but considered broken for security.
Generate hashes online with Tooly
The Tooly SHA-256 Generator supports all four:
- SHA-256, SHA-512, SHA-1, and MD5 in one tool
- Hashes update instantly as you type
- Runs via the Web Crypto API in your browser — nothing is uploaded
- Copy any hash with one click
Open Hash Generator
Common uses
| Use case | Why |
|---|---|
| File verification | Compare a download's hash against the publisher's checksum |
| Password storage | Store hashes, never plaintext passwords |
| API integrity | HMAC-style verification of request payloads |
| Deduplication | Hash content to spot identical files or records |
Quick reference
SHA-256("Hello")= 185f8db32271fe25f561a6fc938b2e264306ec304eda518007d1764826381969MD5("Hello")= 8b1a9953c4611296a827abf8c47804d7
Frequently Asked Questions
Is this hash generator really free? Yes — unlimited hashing, no account, no watermark.
Is my input uploaded? No — hashing runs entirely in your browser via the Web Crypto API, so passwords and secrets stay on your device.
Which algorithm should I use? SHA-256 for most purposes; SHA-512 when you want more strength. Avoid MD5 and SHA-1 for security-sensitive work.
Can a hash be reversed? No — hashing is one-way by design. That's why it's used for password storage and integrity checks.