Hash generator

Create SHA-256, SHA-1, SHA-384 and SHA-512 hashes from any text — instantly and privately in your browser.

Files never uploadedNo sign-upWorks in your browserFree & unlimited

Generate a hash in 3 simple steps

1

Enter your text

Type or paste any string — a password, token, message or file contents.

📝
2

Read every digest

SHA-1, SHA-256, SHA-384 and SHA-512 are computed instantly, all at once.

#️⃣
3

Copy & compare

Copy the digest you need and compare it against a published checksum to verify.

📋

Why use this hash generator

🔐

Web Crypto API

Hashes are computed with the browser's native engine — the same one that secures HTTPS.

🧮

Four SHA algorithms

Get SHA-1, SHA-256, SHA-384 and SHA-512 digests side by side from a single input.

🔒

100% private

Hashing happens entirely in your browser, so passwords and tokens are never uploaded.

✅

Verify downloads

Compare a SHA-256 value against a publisher's checksum to confirm a file is untampered.

🎯

Deterministic

Identical input always gives identical output, so you can reliably compare values for equality.

🆓

Free & unlimited

No sign-up, no limits — works offline once the page has loaded.

Generate secure hashes in your browser

A cryptographic hash turns any input into a fixed-length fingerprint. The same input always produces the same hash, but you can never work backwards to the original — which is why hashes are used for integrity checks, checksums and storing comparisons safely. Enter your text and get SHA-1, SHA-256, SHA-384 and SHA-512 at once.

This tool uses the browser's native Web Crypto API, the same engine that secures HTTPS, so the results are correct and computed entirely on your device. Nothing you type is ever uploaded.

How to generate a hash

Type or paste your text into the box and the SHA-1, SHA-256, SHA-384 and SHA-512 digests appear instantly, each ready to copy with one click. To verify a download, paste the same input the publisher used and compare the SHA-256 value against the one they list — if a single character differs, the hashes will be completely different, which is exactly the point.

Choosing the right algorithm

For general integrity checks and checksums, SHA-256 is the standard choice; step up to SHA-512 when you want a longer digest. Avoid SHA-1 for anything security-critical, as it is now considered weak. If you need unguessable random strings rather than a fingerprint, the password generator and UUID generator are better fits, and you can find every option on the developer tools page.

More developer tools

JSON FormatterBeautify, minify & validate JSON.Open tool Base64 Encode/DecodeText ↔ Base64, Unicode-safe.Open tool UUID GeneratorRandom UUID v4, single or bulk.Open tool URL Encode/DecodeEscape & unescape URLs and params.Open tool

Frequently asked questions

Which hash algorithms are supported?
SHA-1, SHA-256, SHA-384 and SHA-512 — all computed with the browser's built-in Web Crypto API, which is the same cryptographic engine the browser uses for HTTPS.
Do you support MD5?
No. MD5 is cryptographically broken and the Web Crypto API deliberately does not provide it. For integrity or security use SHA-256 or stronger, which are all available here.
Is my text uploaded to generate the hash?
No. Hashing happens entirely in your browser, so the text you enter is never sent anywhere. That makes it safe for passwords, tokens and private strings.
What can I use a hash for?
Verifying file or message integrity, comparing values without storing the original, generating checksums, and de-duplicating data. A hash is one-way: you cannot reverse it back to the input.
Why does the same text always give the same hash?
Hash functions are deterministic by design — identical input always produces identical output. That property is what lets you compare two values for equality or verify that a download matches a published checksum.
What is the difference between SHA-256 and SHA-512?
Both are from the SHA-2 family and are considered secure. SHA-256 produces a 64-character (256-bit) digest, while SHA-512 produces a 128-character (512-bit) digest and can be faster on 64-bit hardware. SHA-256 is the most common default.
Can someone reverse a hash to get my password back?
Not directly — hashing is one-way. However, weak or unsalted hashes can be attacked with precomputed tables, so for real password storage you should add a unique salt and use a slow algorithm like bcrypt or Argon2 rather than a raw SHA hash.
Is a SHA hash the same as a checksum?
A SHA hash can serve as a checksum, but it is cryptographically strong, meaning it also resists deliberate tampering. Simple checksums like CRC32 only catch accidental errors and are easy to forge, so SHA-256 is preferred for security-sensitive verification.

By Narender Chaudhary, Editorial & Product Lead · Updated June 2026