MD5 · SHA-1 · SHA-256 · SHA-512
Hash Generator
Create MD5, SHA-1, SHA-256, or SHA-512 digests locally from any text.
Hash Generator
Create MD5, SHA-1, SHA-256, or SHA-512 digests locally from any text.
Computed in your browser; nothing is sent to a server.
Algorithms
Hash results
Copy any digest or all at once.
Pick at least one algorithm to generate hashes.
What
Hash Generator definition
Hashing creates a fixed-length digest (MD5/SHA) from text for integrity checks and fingerprints.
Cases
Use Cases
1
Compare two strings by hash
2
Generate checksums for API payloads
3
Create deterministic identifiers for content
How To
How to Generate Hash Values
A step-by-step guide to creating MD5, SHA-256 and other hashes.
1
Enter text
Paste the text you want to hash into the input field.
2
Select algorithms
Choose from MD5, SHA-1, SHA-256, or SHA-512.
3
Copy hashes
Copy individual hashes or all at once.
Knowledge
Understanding Cryptographic Hashing
What is a Hash Function?
A hash function takes any input and produces a fixed-length output (digest). The same input always produces the same hash, but even tiny changes in input create completely different hashes (avalanche effect).
MD5 - Fast but Insecure
MD5 produces 128-bit (32 hex character) hashes. While fast, it's cryptographically broken—collisions can be found quickly. Use only for non-security purposes like checksums or cache keys where collision attacks aren't a concern.
SHA-1 - Deprecated
SHA-1 produces 160-bit (40 hex character) hashes. It was widely used but is now deprecated for security purposes since practical collision attacks exist. Many systems have migrated to SHA-256.
SHA-256 and SHA-512 - Secure
SHA-256 (256-bit) and SHA-512 (512-bit) are part of the SHA-2 family. They remain secure for cryptographic purposes including digital signatures, certificate verification, and password hashing (when combined with salt).
Hashing vs Encryption
Hashing is one-way—you cannot recover the original data from a hash. Encryption is two-way—data can be decrypted with the right key. Hashes verify data integrity; encryption protects data confidentiality.
FAQ
Hash generator FAQ
Do hashes run locally?
Yes. MD5 uses a lightweight implementation and SHA variants use the Web Crypto API in your browser or runtime.
Which encodings are used?
Text is UTF-8 encoded before hashing. Outputs are lowercase hexadecimal strings.
Is MD5 secure?
MD5 is broken for collision resistance. Use SHA-256 or SHA-512 for integrity and signatures; MD5 is only for legacy checksums.
Why might hashing fail?
If Web Crypto is unavailable or an algorithm is blocked, SHA digests can fail. Ensure you're in a modern browser or runtime.
Can I hash large inputs?
Yes, but hashing very large payloads runs in memory on the client. For huge files, prefer a streaming tool.
What are common uses for these hashes?
Checksums for downloads, verifying payload integrity, cache keys, and signature inputs often use SHA-256 or SHA-512.
What is collision resistance in hashing?
Collision resistance means it is hard to find two different inputs that produce the same hash. MD5 and SHA-1 are weak here; SHA-256 and SHA-512 remain widely collision-resistant for practical use.