Useful Hash & Checksum Tools starting points

Jump into a common task, then use the full directory below for more specialized tools.

File Checksum Verifier CRC32 Checksum Calculator SHA-1 Hash Generator MD5 Hash Generator File Checksum Calculator File Hash Compare

15 browser-local tools

Hash & Checksum Tools

Hash and verify text, files, manifests and HMACs locally with clear integrity/authenticity boundaries.

Choose the security job first

separates password creation, policy review, integrity hashes, keyed authenticity, KDF verification and encryption/signature primitives so similarly named security concepts are not presented as interchangeable.

Text digests

Hash text with modern or legacy algorithms when compatibility requires it.

SHA-256 Hash GeneratorCalculate the 256-bit SHA-2 digest of text and view hexadecimal or Base64 output without sending the input to a server.Hash GeneratorUse cryptographic hashes for integrity/fingerprints where appropriate; use a password-hashing/KDF workflow—not a fast SHA/MD5 digest—when storing passwords.SHA-384 Hash GeneratorCalculate a 384-bit SHA-2 digest with Web Crypto and view hexadecimal or Base64 output.SHA-512 Hash GeneratorCalculate a 512-bit SHA-2 digest with Web Crypto and view hexadecimal or Base64 output.SHA-1 Hash GeneratorCreate the 160-bit SHA-1 digest of UTF-8 text in the browser; modern security designs should prefer SHA-256 or stronger.MD5 Hash GeneratorCreate the 128-bit MD5 digest of UTF-8 text in hexadecimal or Base64; do not use MD5 where collision resistance is required.CRC32 Checksum CalculatorGenerate the standard reflected CRC-32 value locally for accidental-corruption checks; CRC32 is not a cryptographic hash.

Files & manifests

Hash local files, compare digests, and generate or verify checksum manifests.

File Checksum CalculatorChoose a local file and algorithm, hash the file bytes in the browser, then compare the complete digest with a trusted published value.File Checksum VerifierVerify MD5, SHA-1, SHA-256, SHA-384, SHA-512, or CRC32 checksums locally without uploading the selected file.Batch File Hash CalculatorChoose an algorithm and generate filename/checksum rows locally for a batch of files.File Hash CompareHash two selected files locally and report whether both byte length and digest match.Checksum Manifest GeneratorCreate portable hash-and-filename lines such as SHA256SUMS-style entries without uploading files.Checksum Manifest VerifierMatch manifest filenames to selected files and validate MD5, SHA-1, SHA-256, SHA-384, SHA-512, or CRC32 entries locally.

Keyed authenticity

Create or verify HMACs when both sides share a secret key.

HMAC GeneratorKeep the secret key private, match the exact algorithm/encoding used by the other system, and use HMAC only when a shared secret is the intended authenticity mechanism.HMAC VerifierChoose SHA-256, SHA-384, or SHA-512, enter a message and secret key, then verify an expected HMAC locally in the browser.

All Hash & Checksum Tools

Hash & Checksum Tools

SHA-256 Hash Generator

Generate a SHA-256 hash from UTF-8 text locally in your browser.

Hash & Checksum Tools

File Checksum Calculator

Calculate local-file checksums with clear algorithm labels, copy-ready output, verification context, and explicit distinction between integrity hashes and password-storage hashing.

Hash & Checksum Tools

Hash Generator

Generate text hashes across common digest algorithms with encoding clarity, copy/export reuse, and explicit security boundaries around deprecated or non-password-storage hashes.

Hash & Checksum Tools