Hash Generator – MD5, SHA-1, SHA-256, SHA-512

I use this for file integrity checks and verifying that downloaded builds match what the developer published. Paste the text, see all four hashes at once. SHA-256 and SHA-512 use the browser's Web Crypto API — the same source trusted by security tooling.

100% free, no signup

Your files are processed in your browser and never uploaded to any server.

A note from me

A mistake I see often: people use MD5 or SHA-1 for passwords. Don't. Both are broken for password storage. Use bcrypt, Argon2, or PBKDF2 for passwords, and use this tool for checksums and file verification. MD5 is still fine for detecting accidental corruption, just not for anything security-related.

— Mirza Noman Baig

How to use this tool

1Paste the text you want to hash.
2See MD5, SHA-1, SHA-256, and SHA-512 instantly.
3Copy any hash with one click.
4Use them for checksums, integrity checks, or development work.

Real results from testing

These are actual measurements from using this tool, not estimates.

Verifying a downloaded file

Before

Downloaded a Linux ISO from a mirror

After

SHA-256 hash matched the official checksum

Confirmed the file wasn't corrupted or tampered with. Always do this for large downloads.

Debugging cache keys

Before

Same input produced different cache hits

After

Hashed the input — found trailing whitespace was changing the hash

The bug was invisible until I compared the hashes. Fixed by trimming the input.

API signature checks

Before

Webhook signature verification kept failing

After

Computed SHA-256 of the raw body and matched the header

The bug was that the framework was parsing the JSON before hashing. Raw body hash matched the expected value.

Hash Generator features

Four algorithms in one view

MD5, SHA-1, SHA-256, and SHA-512 — see them all at once.

Secure Web Crypto API

SHA-256 and SHA-512 use the browser's trusted crypto library.

Instant results

Hashes update as you type. No button to press.

Runs locally

Nothing gets uploaded. Safe for API keys, tokens, and sensitive strings.

Frequently asked questions

Can I use these hashes for passwords?+

No. MD5, SHA-1, SHA-256, and SHA-512 are all too fast for password storage. Use bcrypt, Argon2, or PBKDF2 instead — they're designed to be slow.

Is SHA-256 better than MD5?+

Yes, much better. MD5 is cryptographically broken and can be deliberately collided. SHA-256 is the current standard for integrity checks.

Is my data uploaded anywhere?+

No. Everything runs in your browser. Nothing gets sent to a server.

Which algorithm should I use?+

For general integrity checks, SHA-256. For maximum security margin, SHA-512. MD5 and SHA-1 only for legacy compatibility.

Does hashing change my input?+

No. The tool only reads your input and produces output. Your original text is unchanged.