Skip to content
T
Tools.Town
Free Online Tools for Everyone
#SHA

Hash Generator

100% Free

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly. Client-side.

Multiple Algorithms
Client-Side
Instant
Hex Output
Algorithm
Learn:How SHA-256 works →Compare all algorithms →
SHA-256 output (0 hex chars)
— enter input above —

✓Computed in your browser. SHA family via crypto.subtle.digest; MD5 via embedded JS. Nothing is transmitted.

Embed This Tool

Easy to Embed

Add Hash Generator to your website or blog in seconds.

  • Responsive design
  • Lightweight & fast
  • No backend required
  • Always up-to-date 
<iframe
  src="https://tools.town/embed/hash-generator/"
  width="100%"
  height="600"
  style="border:none; border-radius:12px;"
  loading="lazy"
  title="Hash Generator">
</iframe>

Share This Tool

Share Instantly

Share Hash Generator with anyone — no login required.

  • Shareable link
  • No login required
  • Works on any device
  • No account needed

Share via

Advertisement

How to Use

  1. 1 Type or paste your input — text, JSON, a config string, anything UTF-8.
  2. 2 Pick an algorithm: MD5, SHA-1, SHA-256, SHA-384, or SHA-512 (SHA-256 is the safe default).
  3. 3 Read the lowercase hex digest, which updates live as you type.
  4. 4 Copy the hash with one click to compare against a checksum or store a fingerprint.

Features

  • Five algorithms in one tool: MD5, SHA-1, SHA-256, SHA-384, and SHA-512.
  • Live output — the digest recomputes the moment your input changes.
  • 100% client-side: SHA family via the browser's Web Crypto API, MD5 via embedded JavaScript.
  • Always lowercase hex so results match sha256sum, git hash-object, and other CLI tools.
  • Inline warnings flag MD5 and SHA-1 as not collision-resistant, with contextual learn links per algorithm.

Why it Matters

Hashes turn any input into a fixed-length fingerprint, and developers reach for them constantly — verifying a download wasn't corrupted, generating cache keys and ETags, deduplicating files, or checking that two payloads are identical without comparing them byte by byte. The catch is that not every algorithm is safe for every job: MD5 and SHA-1 are fast and fine for integrity checks on trusted data, but both are broken for security because collisions can be manufactured. This tool computes all five common digests entirely in your browser, so you can fingerprint sensitive input without it ever leaving the page, and it surfaces which algorithms are safe for security versus checksums only.

★★★★★

Use Cases

File Integrity

Verify a download or backup matches its published SHA-256 checksum before you trust it.

Developer Fingerprints

Generate cache keys, ETags, and dedupe IDs from content without rolling your own hashing.

Security Review

Confirm a system isn't using MD5 or SHA-1 where a collision-resistant digest is required.

Quick Comparison

Hash two strings or files and compare digests to confirm they're byte-for-byte identical.

How to use

  1. Type or paste your input (text, JSON, anything UTF-8).
  2. Pick the algorithm — SHA-256 is the safe default.
  3. The output updates as you type. Copy with one click.

When to use which

  • SHA-256 / SHA-512 — file fingerprints, content integrity, signing.
  • SHA-1 — legacy compatibility (Git uses it for object IDs). Avoid for new systems.
  • MD5 — checksums for trusted data only. Never for security.

Privacy

SHA hashes are computed via crypto.subtle.digest. MD5 uses a pure-JavaScript implementation embedded in this page. Nothing is transmitted. Open DevTools → Network and verify: zero requests when you hash.

Frequently Asked Questions

Which hash should I use?
For new security applications, use SHA-256 or higher. SHA-1 and MD5 are still fine for non-security purposes (file fingerprints, ETags, dedupe) but are not collision-resistant.
Is MD5 secure?
No, not for security. MD5 collisions are trivially produced today. Don't use it for password storage, signatures, or anything where a forgery matters. It remains useful for checksums of trusted data.
Is anything sent to a server?
No. SHA hashes are computed via the browser's Web Crypto API; MD5 runs as pure JavaScript in your browser. Your input never leaves the page.
How long is each hash output?
MD5 = 32 hex chars (128-bit). SHA-1 = 40 (160-bit). SHA-256 = 64 (256-bit). SHA-384 = 96 (384-bit). SHA-512 = 128 (512-bit).
Are hashes case-sensitive?
We always output lowercase hex. Compare in lowercase to match other tools (e.g., `sha256sum`, `git hash-object`).
📖

Want to learn how this works?

Browse all guides →
Hash Algorithms Explained
hashing

Hash Algorithms Explained — MD5, SHA-1, SHA-256 & Beyond

A plain-language guide to cryptographic hash functions. Learn what hashing is, how it works, and which algorithm to pick for passwords, file verification, or blockchain.

8 Mar 2026

5 min read

SHA-256
SHA-256

SHA-256 — The Hash Algorithm Powering the Modern Web

A deep dive into SHA-256: how it produces its 64-character digest, why it's the current security standard, and how it's used in Bitcoin, TLS, and file verification.

8 Mar 2026

5 min read

SHA-512
SHA-512

SHA-512 — The Most Powerful Hash in the SHA-2 Family

A complete guide to SHA-512: its 128-character digest, 64-bit architecture, why it can be faster than SHA-256, and use cases in DNSSEC, SSH, and high-security signing.

8 Mar 2026

5 min read

MD5 Hash
MD5

MD5 Hash — What It Is, How It Works, and Why It's No Longer Safe

A complete guide to the MD5 hash algorithm: how it produces a 32-character digest, why MD5 is cryptographically broken, and what to use instead.

8 Mar 2026

5 min read

SHA-1 Hash
SHA-1

SHA-1 Hash — How It Works and Why It's Been Deprecated

Everything about SHA-1: its 40-character output, how it differs from MD5, the SHAttered collision attack, and why modern systems have moved to SHA-256.

8 Mar 2026

5 min read

Related Tools You Might Like

Password Generator

Generate strong, secure and random passwords instantly. Keep your accounts safe with our advanced password generator.

BIP-39 Mnemonic Generator

Generate real BIP-39 recovery phrases (12, 15, 18, 21, or 24 words) using cryptographically secure entropy and the official wordlist — plus a checksum validator to sanity-check a phrase you already wrote down. Educational and testing use; never enter a real wallet's seed phrase anywhere.

HTPasswd Generator

Generate .htpasswd entries for Apache and Nginx HTTP Basic Auth using the portable APR1 (Apache MD5) or SHA-1 algorithm — hashed entirely in your browser.

Random UUID Generator

Generate cryptographically random UUIDs (v4), time-ordered UUIDs (v7), or the nil UUID — with uppercase and no-hyphen options, in bulk, right in your browser.

Password Strength Checker

Check how strong your password is, see an estimated crack time, a class-by-class breakdown, and clear tips to make it stronger — instantly and entirely in your browser.

Browse more free tools
More Security Tools All categories