Hash Text
Hash Files
Drop files here or click to browse
All hashing happens in your browser. Nothing is uploaded.
What Is a Hash?
A cryptographic hash function takes any input — a string of text, a file, a password — and produces a fixed-length string of characters (the "hash" or "digest"). The same input always produces the same hash, but even a tiny change to the input produces a completely different output. This makes hashes invaluable for verifying data integrity, storing passwords, and detecting tampering.
Our hash calculator supports five widely-used algorithms: MD5, SHA-1, SHA-256, SHA-384, and SHA-512. Whether you need to verify a downloaded file's integrity, generate a checksum for an API payload, or compare two files for differences, this tool handles it entirely in your browser.
File integrity verification, password storage, data fingerprinting — hashing is one of those fundamental operations that developers reach for constantly. This calculator computes MD5, SHA-1, SHA-256, SHA-384, and SHA-512 simultaneously for any text or file you provide. All hashing runs locally using the Web Crypto API, so sensitive data never leaves your browser.
Key Features
Multiple Algorithms
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes in one click. Select one or all algorithms simultaneously to compare outputs side by side.
Text & File Hashing
Hash plain text directly or upload files of any type. The tool reads files locally and computes hashes without uploading anything to a server.
100% Client-Side
All hashing is performed in your browser using the Web Crypto API and a local MD5 implementation. Your data, text, and files never leave your device.
HEX & Base64 Output
Switch between hexadecimal and Base64 encoding for hash output. Enable uppercase mode for HEX hashes when your workflow requires it.
Batch File Processing
Upload multiple files and hash them all at once. Each file displays its own set of hash results for easy comparison and verification.
One-Click Copy
Click any hash to copy it to your clipboard instantly. No selection or manual copying needed — perfect for quick integrity checks.
Algorithm Comparison
| Algorithm | Output Length | Speed | Security | Best For |
|---|---|---|---|---|
| MD5 | 128 bits (32 hex) | Fastest | Broken | Checksums (non-security) |
| SHA-1 | 160 bits (40 hex) | Fast | Weak | Git commits, legacy |
| SHA-256 | 256 bits (64 hex) | Good | Strong | File integrity, APIs |
| SHA-384 | 384 bits (96 hex) | Moderate | Strong | TLS, certificates |
| SHA-512 | 512 bits (128 hex) | Moderate | Strongest | Maximum security |
Common Use Cases
File Integrity Verification
Compare a file's hash against the publisher's checksum to verify it hasn't been corrupted or tampered with during download. Essential for software, firmware, and ISO images.
API Payload Signing
Generate SHA-256 hashes for webhook payloads, API request signing, and HMAC authentication. Verify that data hasn't been modified in transit.
Data Deduplication
Hash files to generate unique fingerprints. Identical hashes indicate identical content, making it easy to find and remove duplicate files across storage systems.
Password Hashing (Reference)
While you should use bcrypt/Argon2 for actual password storage, SHA-256 hashes are useful for understanding hash concepts, testing, and non-security checksum generation.