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Key Features
Instant Calculation
Get accurate results in real time with our optimized algorithm.
Mobile Friendly
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100% Free
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A hash is a fixed-length fingerprint of data — the same input always produces the same hash, and even a tiny change to the input produces a completely different one. This tool computes the four hash algorithms developers reach for most often — MD5, SHA-1, SHA-256 and SHA-512 — from any text you enter, all at once.
It's built for checking file/text integrity, generating cache keys or identifiers, and comparing values without exposing the original text. MD5 and SHA-1 are still common for non-security checksums, but shouldn't be relied on for password storage or security-sensitive purposes — modern applications should use a dedicated password hashing algorithm (like bcrypt or Argon2) instead.
How it works
Paste or type your text, and all four hash algorithms are computed instantly: MD5 (128-bit), SHA-1 (160-bit), SHA-256 (256-bit) and SHA-512 (512-bit). Each is shown as its standard hexadecimal representation.
- Paste or type your text.
- View all four hash algorithms computed instantly.
- Copy the hash you need, or save it to download as a PDF.
Examples
Checking text integrity
Hashing the same piece of text before and after transferring or storing it lets you confirm nothing changed — if the hashes match, the content is identical.
Generating a deterministic identifier
Hashing a combination of fields (like an email and timestamp) produces a consistent, fixed-length identifier useful as a cache key or lookup value.
Who should use it
- Verifying that a file or text hasn't changed by comparing hashes.
- Generating a deterministic identifier or cache key from input data.
- Learning how hash functions behave with different inputs.
Industry applications
- Software development and DevOps
- Data integrity verification
- Caching and identifier generation
Advantages
- Computes all four common hash algorithms in one step.
- Deterministic — the same input always produces the same hash for easy comparison.
- No account or software installation needed.
Limitations
- Not a substitute for a dedicated password hashing algorithm.
- MD5 and SHA-1 are included for compatibility but are considered weak for security purposes.
Common mistakes to avoid
- Using MD5 or SHA-1 for password storage or other security-sensitive purposes.
- Assuming a matching hash guarantees the data hasn't been tampered with maliciously, without also verifying the hash came from a trusted source.
- Confusing hashing (one-way, not reversible) with encryption (two-way, reversible with a key).
Best practices
- Use SHA-256 or SHA-512 for new general-purpose hashing needs rather than MD5 or SHA-1.
- Never use a general-purpose hash function alone for password storage — use bcrypt, Argon2, or a similar dedicated password hashing algorithm.
- When verifying file integrity, get the expected hash from a trusted source, not from the same place as the file itself.
Tips
- When comparing two hashes, compare the full string exactly — even a single differing character means the inputs were different.
- For anything security-sensitive involving passwords, use a dedicated password hashing library instead of a general-purpose hash function.