Category: Developer
· URL: /tools/hash-tool.html
For security use SHA-256 or stronger. MD5/SHA-1 are legacy and collision-prone.
Hex is the most common for checksums. Base64 is compact for tokens.
If a file is selected, the file is hashed (text box is ignored). No upload.
Tip: hashes are sensitive to every character (spaces, newlines, casing).
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Privacy: runs locally in your browser. No uploads, no tracking scripts.
How to use
Use this hash tool to generate a digest from text or a local file.
- Select an algorithm (MD5, SHA-1, SHA-256, SHA-384, SHA-512).
- Paste text into the input (or choose a file).
- Pick an output format (hex or Base64) and click Generate hash.
- Use Copy to copy the digest. Use Reset to clear.
Keywords this page targets (natural cluster): hash tool, sha256 hash generator, sha512 hash generator, sha1 hash generator, md5 hash generator, hash text online, hash a string, file hash calculator, checksum generator, compute sha256 checksum, hash to hex, hash to base64, verify file integrity hash, generate sha384 hash, compare hash values, web crypto sha256, md5 checksum for text, sha256 online tool, hash calculator for developers, browser hash tool
Secondary intents covered: Generate a SHA-256 hash for a pasted string, Create a checksum for a downloaded file to verify integrity, Switch between MD5 and SHA-* algorithms for compatibility, Copy the resulting digest quickly for use in scripts/configs, Output hashes in hex or Base64 depending on downstream needs, Confirm whether two inputs produce the same digest, Hash an empty string to validate known test vectors, Understand why MD5/SHA-1 are not recommended for security
FAQ
Is this hash tool uploading my text or files?
No. Hashing runs locally in your browser; nothing is sent to a server.
Which algorithm should I use: MD5, SHA-1, or SHA-256?
Use SHA-256 (or SHA-512) for modern integrity/security needs. MD5 and SHA-1 are legacy and vulnerable to collisions.
Why does a tiny change in input produce a totally different hash?
Cryptographic hashes have the avalanche effect: one character change should drastically change the digest.
Does the tool hash text as UTF-8?
Yes. Text is encoded as UTF-8 before hashing.
Can I hash a file to verify a download checksum?
Yes—select a file and the tool will hash the file contents locally and output the digest.
What’s the difference between hex and Base64 output?
They represent the same bytes in different encodings: hex is common for checksums; Base64 is shorter.
Can I use hashes to store passwords safely?
Not by itself. Password storage should use a slow, salted password-hashing function (e.g., bcrypt/Argon2), not raw MD5/SHA-*.