SHA Hash Generator

Useful for verifying file integrity strings, comparing values, generating checksums and testing hash-based logic during development.

How to use the sha hash generator

Type or paste the text you want to hash.

All four hashes are generated instantly.

Click Copy next to the one you need.

Why use the Convert Now sha hash generator

Four algorithms

SHA-1, SHA-256, SHA-384 and SHA-512 side by side.

Web Crypto API

Native browser cryptography, not a JavaScript reimplementation.

Copy each hash

One click per algorithm.

Private

Input never leaves your machine.

What a hash function does

A cryptographic hash turns any input into a fixed-length fingerprint. The same input always produces the same output; changing a single character produces a completely different result; and the process cannot be reversed to recover the input. That combination is what makes hashes useful for verifying that data has not changed, comparing values without storing the originals, and building digital signatures.

Which algorithm to choose

SHA-256 is the sensible default for almost everything – widely supported, fast and with no known practical weaknesses. SHA-512 is not meaningfully more secure for most purposes but is faster on 64-bit hardware. SHA-1 is broken: practical collision attacks were demonstrated in 2017, and it should only appear when a legacy system demands it. MD5 is worse still and is deliberately not offered here.

Hashing passwords needs more than this

A plain SHA hash is the wrong tool for storing passwords, because it is designed to be fast – and fast means an attacker with a stolen database can test billions of guesses per second. Password storage requires a deliberately slow, salted algorithm such as bcrypt, scrypt or Argon2, which are tuned so that each guess costs real time and memory. Use this tool for integrity checks and development, not for building an authentication system.

Read the guide: How to Create a Strong Password (That You Can Remember)

Frequently asked questions

What is a SHA-256 hash?

A 256-bit fingerprint of your input, shown as 64 hexadecimal characters. The same input always gives the same hash, and the process cannot be reversed.

Can a hash be decrypted?

No. Hashing is one-way by design. Short or common inputs can sometimes be found in precomputed lookup tables, which is why salting matters when hashing sensitive values.

Which hash algorithm should I use?

SHA-256 for general purposes. Avoid SHA-1 and MD5 for anything security-related – both have practical collision attacks.

Why is MD5 not offered?

MD5 is cryptographically broken and should not be used for new work. We include SHA-1 only for legacy compatibility.

Can I hash passwords with this?

You should not store passwords as plain SHA hashes. Use bcrypt, scrypt or Argon2, which are deliberately slow and salted.

Is my text uploaded?

No. Hashes are computed locally with the Web Crypto API built into your browser.