The Free Hash Generator
Generate MD5,
SHA-1,
SHA-256,
SHA-384 and
SHA-512 hashes from any text — instantly,
client-side only. Your data never leaves the browser. No sign-up, no limits.
Your input
Your hash
What is a hash function?
A hash function takes any input — a word, a password, an entire file — and produces a fixed-length string of hexadecimal digits called a digest or hash. The same input always produces the same output, but even a tiny change in the input (a single character, a space, a different capital letter) produces a completely different hash.
Hash functions are one-way: you can compute the hash from the input, but you cannot recover the original input from the hash alone. This makes them useful for verifying file integrity, storing passwords (with a proper algorithm), and digital signatures.
SHA-256("hello") = 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
SHA-256("Hello") = 185f8db32921bd46d35cc2e7d9abbc77dc85fc2c6f02e671aa83b59de718a7c7
How to use this hash generator
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1
Choose an algorithm
Pick MD5 for compatibility and checksums, SHA-256 for security-sensitive use cases, or SHA-512 for maximum collision resistance.
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2
Type or paste your text
The hash updates live as you type. Any text works — passwords, filenames, code, anything.
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3
Toggle case if needed
Switch between lowercase (default) and uppercase output with one click.
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4
Copy the result
Hit the copy button to grab the hash. Paste it wherever you need it — verification, documentation, code.
Frequently asked questions
What is an MD5 hash? +
MD5 (Message Digest Algorithm 5) produces a 128-bit (32 hex character) fingerprint of any input. It is fast and widely used for checksums and file integrity checks, but it is no longer considered cryptographically secure for passwords or digital signatures.
What is SHA-256? +
SHA-256 is part of the SHA-2 family and produces a 256-bit (64 hex character) hash. It is widely used for digital signatures, SSL certificates, and blockchain. It is significantly more collision-resistant than MD5 or SHA-1.
Is my data safe when I use this tool? +
Yes. All hashing happens entirely in your browser using the Web Crypto API (and a pure-JS MD5 for MD5 hashes). Your text is never sent to any server. The tool works offline after the first load.
What is the difference between MD5, SHA-1, SHA-256, SHA-384 and SHA-512? +
MD5 produces 32 hex chars (128 bit), SHA-1 produces 40 (160 bit), SHA-256 produces 64 (256 bit), SHA-384 produces 96 (384 bit), and SHA-512 produces 128 (512 bit). Longer hashes are harder to reverse and have a lower chance of collisions. For security-sensitive applications, use SHA-256 or higher. MD5 and SHA-1 are deprecated for cryptographic use.
Can I use a hash as a password? +
No. Hashes are one-way functions, so the original text cannot be recovered from the hash — but MD5 and SHA-1 hashes of common passwords are easily cracked via rainbow tables. For password storage, use a dedicated password-hashing function like bcrypt, scrypt, or Argon2.
What does uppercase vs lowercase mean for a hash? +
Hash values are hexadecimal numbers, so the digits 0–9 and letters a–f (or A–F) are valid. Uppercase and lowercase versions represent the same numeric value — the difference is purely cosmetic. Many tools output lowercase by default; some systems require uppercase.
Is this hash generator free? +
Yes. It is completely free, needs no sign-up, and has no usage limits. The site is funded by unobtrusive ads.
Does the hash change if I add a space or change capitalization? +
Yes. Hash functions are extremely sensitive to input changes. Even a single character difference (including whitespace, punctuation, or case) produces a completely different hash. This property is called the avalanche effect.