A cryptographic hash function takes input data of any size and produces a fixed-size output (the "hash" or "digest"). The same input always produces the same hash, but even a tiny change in input creates a completely different output. Hashes are used for data integrity checks, password storage, digital signatures, and checksums.
Generate cryptographic hashes in three steps.
Type or paste the string you want to hash. The input can be any length — from a single word to a full document.
Choose from MD5, SHA-1, SHA-256, SHA-384, or SHA-512. SHA-256 is the most commonly used for general-purpose hashing.
The hash is computed instantly in your browser. Click Copy to grab the hex digest for use in your code, configs, or verification workflows.
Hash a file's contents with SHA-256 and compare the digest against a published checksum to verify the file hasn't been tampered with during download or transfer.
Hash sensitive values (API keys, passwords, tokens) and compare the digests instead of the raw strings. Useful for verifying matches in logs without leaking secrets.
Create deterministic cache keys by hashing request parameters or query strings with MD5 or SHA-256. Identical inputs always produce the same key, making cache lookups reliable.
Hash data before and after transmission to confirm nothing was corrupted in transit. Common in CI/CD pipelines, artifact publishing, and inter-service communication.
Enter your text in the input field and select a hash algorithm (MD5, SHA-1, SHA-256, or SHA-512). The tool instantly computes the hash using your browser's built-in Web Crypto API. The hash appears as a hexadecimal string you can copy.
A cryptographic hash function takes any input and produces a fixed-size string of characters (the hash or digest). The same input always produces the same hash, but even a tiny change in input produces a completely different hash. Hashes are used for data integrity verification, password storage, digital signatures, and checksums.
For general-purpose hashing and security, use SHA-256 — it's widely supported and considered secure. Use SHA-512 for stronger security requirements. Avoid MD5 and SHA-1 for security-critical applications as they have known vulnerabilities, though they're still useful for checksums and non-security purposes.
Yes. All hashing is done entirely in your browser using the Web Crypto API. Your input text is never sent to any server, making it safe to hash passwords, API keys, and other sensitive data.
This tool hashes text input. For file integrity verification, you would compute the file's hash and compare it to the expected hash. If both match, the file hasn't been modified. SHA-256 checksums are the standard for verifying downloads and file integrity.
MD5 produces a 128-bit (32-character) hash and is fast but cryptographically broken. SHA-256 produces a 256-bit (64-character) hash and is the current standard for most security applications. SHA-512 produces a 512-bit (128-character) hash and offers higher security but is slightly slower. All three always produce the same output for the same input.