Hash Generator Online Free
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and SHA-3 hashes from any text or file. Instant output, compare mode, batch hashing, and HMAC support. All processing stays in your browser.
Enter one value per line. Each line will be hashed with all selected algorithms.
Why Use a Hash Generator Online Free
Hashing is fundamental to security, data integrity, and software development. This tool gives you instant hashes for MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, and SHA3-512, all without installing anything or sending your data anywhere.
Use it to verify file integrity, check if two strings are identical without exposing the originals, generate checksums for API signatures, or test password hashing logic. HMAC mode adds a secret key to the computation for message authentication.
Batch mode lets you hash hundreds of values at once. Compare mode tells you in one click whether two inputs produce the same hash. File mode handles documents, images, and archives directly in the browser.
What this tool does
How to use it
Choose a mode
Select Text, File, Batch, or Compare depending on your use case.
Pick your algorithms
Toggle which algorithms to run. Enable All to generate every supported hash at once.
Enter your input
Type or paste text, drop a file, or enter multiple lines for batch mode.
Copy or download
Copy individual hashes with one click, or download all results as a .txt file.
FAQ: Hash Generator Online Free
A hash generator takes any input (text, file, or data) and produces a fixed-length string called a hash or digest. Hashes are used to verify file integrity, store passwords securely, sign API requests, generate checksums, and confirm that data has not been tampered with.
MD5 and SHA-1 are older algorithms that produce shorter hashes and are considered cryptographically broken. They are still useful for checksums and non-security purposes. SHA-256 is the most widely used secure algorithm today. SHA-512 offers a longer output with higher security margin. For new systems, SHA-256 or SHA-512 is recommended.
No. All hashing runs inside your browser using the Web Crypto API and pure-JavaScript implementations. Nothing leaves your device. You can safely hash passwords, API keys, and confidential documents.
HMAC (Hash-based Message Authentication Code) combines a hash function with a secret key. It confirms both that the data has not changed and that the sender holds the correct key. HMAC is commonly used in webhook signatures, API request authentication, and JWT tokens.
Yes. Switch to File Hash mode and drop any file onto the upload area. The tool reads the file in your browser and computes SHA-1, SHA-256, SHA-384, and SHA-512 hashes immediately. This is useful for verifying that a downloaded file matches the checksum published by its source.
Batch mode lets you enter one value per line and hash all of them at once using every selected algorithm. The output shows each input alongside its hashes in a structured format you can copy or download as a .txt file.
No. Hash functions are one-way by design. There is no mathematical way to reverse a hash back to its input. Attackers can try to crack weak passwords by hashing common words and comparing results, which is why salted hashing is used for password storage.