Hash Comparison Tool Online | SHA-256, SHA-512, MD5 Multi-Algorithm

This tool computes four hash algorithms simultaneously using your browser's built-in Web Crypto API. Enter any text and see SHA-1, SHA-256, SHA-384, and SHA-512 hashes appear in real time — no buttons to click. Ideal for verifying downloaded files against published checksums or comparing hash outputs across algorithms during migration from SHA-1 to SHA-256.

Algorithm Comparison

Algorithm	Output Size	Hex Length	Status	Best for
SHA-1	160-bit (20 bytes)	40 chars	Deprecated (collision attacks)	Legacy checksums, non-security use
SHA-256	256-bit (32 bytes)	64 chars	Secure	File verification, blockchain, TLS
SHA-384	384-bit (48 bytes)	96 chars	Secure	High-security applications
SHA-512	512-bit (64 bytes)	128 chars	Secure	Maximum security, password KDFs

Code Examples

Compute multiple hashes with Web Crypto API:

// Browser — Compute SHA-256 and SHA-512
const message = new TextEncoder().encode('hello world');

const sha256 = await crypto.subtle.digest('SHA-256', message);
const sha512 = await crypto.subtle.digest('SHA-512', message);

const toHex = buf => Array.from(new Uint8Array(buf))
  .map(b => b.toString(16).padStart(2, '0')).join('');

console.log('SHA-256:', toHex(sha256));
console.log('SHA-512:', toHex(sha512));

# Python — Compute multiple hashes
import hashlib

message = b'hello world'
sha256 = hashlib.sha256(message).hexdigest()
sha512 = hashlib.sha512(message).hexdigest()

print(f'SHA-256: {sha256}')
print(f'SHA-512: {sha512}')

Security Notes

• SHA-1 is deprecated — do not use for security purposes; vulnerable to collision attacks since 2017 (Google SHAttered).
• SHA-256 is the current standard — widely supported and secure for most applications.
• SHA-512 is faster on 64-bit systems — consider it for performance-critical applications.
• Hashing is deterministic — the same input always produces the same hash; useful for data integrity verification.

Related Tools

Need to generate a single hash? Try the SHA Hash Generator. For HMAC generation with a secret key, see the HMAC Generator. You can also derive keys from passwords using the KDF Hash Generator.