Hash Generator — MD5 · SHA-1 · SHA-256 · SHA-512 Simultaneously
All 4 algorithms simultaneously · HMAC mode · File hashing · Compare · Batch · 100% browser-side
Type text → get all 4 hashes instantly
MD5 · SHA-1 · SHA-256 · SHA-512 · Real-time
Generate all 4 cryptographic hashes simultaneously — MD5, SHA-1, SHA-256, and SHA-512. Real-time results as you type. HMAC mode for API authentication. Drag & drop any file to hash its contents without uploading. 100% browser-side.
What is a Hash Function?
A hash function converts any input — text, password, file — into a fixed-length string of hexadecimal characters. The same input always produces the same hash, but even a single character change produces a completely different hash. Hashes are one-way — you cannot reverse them to recover the original input.
MD5 vs SHA-1 vs SHA-256 vs SHA-512
MD5 (128-bit, 32 hex chars) is fast and widely used for non-security checksums but is cryptographically broken. SHA-1 (160-bit, 40 hex chars) is deprecated for security use since 2017. SHA-256 (256-bit, 64 hex chars) is the current industry standard — used in SSL certificates, Bitcoin, and code signing. SHA-512 (512-bit, 128 hex chars) offers maximum security for highly sensitive applications.
Frequently Asked Questions
What is a hash function?
A hash function converts any input into a fixed-length hex string. Same input always gives same hash. You cannot reverse a hash. Used for password storage, file verification, and digital signatures.
Which hash should I use for passwords?
None of these directly — use bcrypt, Argon2, or PBKDF2 for passwords. These hashes are too fast for password storage. SHA-256/512 are for data integrity, digital signatures, and HMAC authentication.
What is HMAC and when do I use it?
HMAC combines a hash with a secret key to verify both data integrity and authenticity. Used in API request signing, webhook verification (GitHub, Stripe), and JWT HS256 signatures.
Can I hash a file?
Yes. Switch to File mode or drag any file into the tool. The browser reads and hashes it locally — nothing is uploaded. Use file hashing to verify a download matches its official checksum.
Is MD5 safe to use?
MD5 is not safe for cryptographic security — collisions are known. For non-security uses like quick checksums or cache keys, MD5 is fine. For anything security-related, use SHA-256 or SHA-512.