Hash Generator
Generate SHA-256, SHA-384, SHA-512, SHA-1 and MD5 hashes locally in your browser. Hash text instantly, compare outputs and copy the result.
Enter text to hash
Choose an algorithm and output format. SHA-256 is recommended for general modern checksums.
Hash result
Copy the generated hash or change output format.
Quick hash examples
What is a hash?
A hash is a fixed-length value generated from input data by a hash function. The same input should produce the same hash, while a small change in the input should produce a very different output. Hashes are one-way fingerprints. They are useful for comparison, checksums and learning, but they are not encrypted text that can be decrypted.
SHA-256 vs SHA-512
SHA-256 and SHA-512 are SHA-2 algorithms. SHA-256 produces a 256-bit output and is a common default for checksums and modern development tasks. SHA-512 produces a longer 512-bit output and can be useful when a system specifically expects it. SHA-384 is also part of the SHA-2 family and produces a 384-bit output.
Why MD5 and SHA-1 are considered legacy
MD5 and SHA-1 are older algorithms with known weaknesses. They can still appear in legacy systems, old checksum lists or compatibility tasks, but they should not be used for modern security-sensitive decisions. This tool labels them as legacy so they are not confused with recommended choices.
Hashing vs encryption
Hashing is one-way. Encryption is reversible with the correct key. If you need to hide data and recover it later, you need encryption, not a hash. If you need to compare whether two inputs are the same without storing the original value, a hash may be useful depending on the threat model.
Common uses for hash generators
Developers use hash generators to compare text, learn how algorithms behave, create sample checksums, verify fixtures, test API examples and debug encoding differences. QA testers and students can use hashes to see how tiny input changes affect output.
When not to use a hash generator
Do not use a plain SHA or MD5 hash as a complete password storage system. Real password storage should use dedicated password hashing algorithms with salts, such as bcrypt, scrypt, Argon2 or PBKDF2. Avoid hashing sensitive production secrets in random online tools. This page runs locally, but good secret handling still matters.
Common hash generator mistakes
Thinking hashes can be decrypted
Hashes are one-way fingerprints. You compare by hashing the same input again, not by decrypting the hash.
Using MD5 for security-sensitive work
MD5 is legacy. Use modern algorithms and appropriate protocols for security tasks.
Using unsalted hashes for passwords
Plain SHA or MD5 hashes are not enough for password storage. Use dedicated password hashing algorithms with salts.
Confusing hashing with encryption
Encryption is reversible with a key. Hashing is not meant to be reversed.
Comparing hashes without checking input encoding
Whitespace, line endings, Unicode characters and encoding differences can all change a hash result.
Hashing sensitive production secrets in random online tools
Be careful with real secrets. This tool runs locally, but production secret handling should still follow your security process.
Free online hash generator
This hash generator helps developers, API testers, students, QA testers, DevOps engineers and security-aware users hash text locally in the browser. It supports SHA-256, SHA-384, SHA-512, SHA-1 and MD5, with lowercase hex, uppercase hex and Base64 output. SHA algorithms use the browser Web Crypto API. MD5 is implemented locally for legacy comparison tasks because Web Crypto does not provide MD5.
Hashes are useful when you need a repeatable fingerprint for text. You can compare two inputs, check whether a value changed, learn algorithm output sizes or prepare sample data for documentation and tests. This tool is not a complete password security system and does not turn MD5 or SHA-1 into modern algorithms.
Local browser hashing
Hashing happens locally in your browser. Your text is not uploaded or stored. If Web Crypto is unavailable for SHA algorithms, the tool shows a warning instead of quietly using an unlabeled fallback. For passwords, use dedicated password hashing tools and server-side storage designs with salts and suitable work factors.
Hash Generator FAQ
What is a hash?
A hash is a fixed-length value generated from input data by a one-way hash function.
What is SHA-256?
SHA-256 is a widely used SHA-2 hash algorithm that produces a 256-bit hash value.
What is MD5?
MD5 is an older hash algorithm that produces a 128-bit hash. It is useful for legacy comparison but not recommended for modern security-sensitive use.
Is MD5 secure?
No. MD5 is considered broken for security-sensitive use and should not be used for modern integrity or authentication decisions.
Is SHA-1 secure?
SHA-1 is considered legacy and should not be used for modern security-sensitive work.
Can a hash be decrypted?
No. Hashing is one-way. A hash is not encrypted text and cannot be decrypted back into the original input.
What is the difference between hashing and encryption?
Hashing is one-way and used for fingerprints or comparisons. Encryption is reversible with the correct key.
Can I hash passwords with this tool?
This tool is useful for learning and testing, but real password storage should use password hashing algorithms with salts such as bcrypt, scrypt, Argon2 or PBKDF2.
Is my text sent to your servers?
No. Hashing happens locally in your browser and your text is not uploaded or stored.
Is this tool free?
Yes. The hash generator is free to use and runs in your browser.