Hash Generator – MD5, SHA-1, SHA-256, SHA-512 Online

Generate cryptographic hashes from text or files directly in your browser using the Web Crypto API. Supports MD5, SHA-1, SHA-256, and SHA-512 — all computed locally with zero data transmission.

Input Text or File

or

Drag & Drop a file here or click to select

Your file stays on your device — never uploaded anywhere.

Hash Results

Hash results will appear here.

Why Use Tools Oasis Hash Generator?

Tools Oasis computes cryptographic hashes securely and instantly in your browser using the Web Crypto API. Perfect for verifying file integrity, generating checksums, or testing hash algorithms.

  • Web Crypto API: Uses the browser's native SubtleCrypto.digest() for SHA hashes — fast, secure, and standards-compliant.
  • 100% Private: Your text and files never leave your device. All hashing happens client-side.
  • All Major Algorithms: Generate MD5, SHA-1, SHA-256, and SHA-512 hashes simultaneously.
  • File Hashing: Drag and drop any file to compute its hash for integrity verification.

Need to generate secure passwords? Try our Password Generator. Encoding data? Use the Base64 Encoder. Working with URLs? Check the URL Encoder/Decoder.

Go Further

Generating strong passwords is the first step. A password manager stores them all securely so you never have to remember them — one master password for everything.

Try NordPass — Free Password Manager

Related Tools You Might Need

Password Generator → Base64 Encoder → JWT Decoder → URL Encoder/Decoder →

Frequently Asked Questions

What hash algorithms are supported?

Tools Oasis supports four algorithms: MD5, SHA-1, SHA-256, and SHA-512. SHA-256 and SHA-512 are computed using the Web Crypto API; MD5 uses a trusted JavaScript implementation.

Is the hashing done on a server?

No. All hash computation happens entirely in your browser. Your text and files are never uploaded, transmitted, or stored anywhere.

Can I hash files with this tool?

Yes. Simply drag and drop any file onto the upload area, and Tools Oasis will compute MD5, SHA-1, SHA-256, and SHA-512 hashes from the file's contents.

What is the difference between MD5 and SHA-256?

MD5 produces a 128-bit hash and is considered cryptographically broken for security purposes, but still useful for checksums. SHA-256 produces a 256-bit hash and is widely used for security, digital signatures, and blockchain.

Can I use this to verify file integrity?

Absolutely. Download a file, drop it here, and compare the computed hash with the one provided by the source. If they match, the file is intact and unmodified.

Does the tool work offline?

Yes. Once the page has loaded, you can generate hashes for text and files without an internet connection.

More Questions About Hashing

What is hashing and how does it work?

Hashing is a one-way mathematical function that converts any input (text or file) into a fixed-length string of characters called a hash or digest. The same input always produces the same hash, but even a tiny change in the input produces a completely different output.

What is the difference between MD5 and SHA-256?

MD5 produces a 128-bit hash and is considered cryptographically broken — it should not be used for security, but is still useful for checksums and data deduplication. SHA-256 produces a 256-bit hash and is widely used for security, digital signatures, and blockchain applications.

Can I reverse a hash to get the original text?

No. Hashing is a one-way function by design — you cannot mathematically reverse a hash back to the original input. While rainbow tables can match known hashes to common inputs, secure hashing algorithms like SHA-256 with unique inputs are practically irreversible.

What are common use cases for hashing?

Hashing is used for verifying file integrity after downloads, storing passwords securely in databases, digital signatures, data deduplication, blockchain transactions, and generating unique identifiers for content.