Free Online Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files online. Verify file checksums. Free, 100% client-side — nothing is uploaded.
100% Client-Side · Your data never leaves your browserHow to Use Hash Generator
Choose between Text and File mode using the tabs at the top.
- Text mode — type or paste any text into the input box.
- File mode — drag a file onto the drop zone or click to browse. Hashing starts after you click Generate Hash. A progress bar tracks large file processing.
Select an algorithm (MD5, SHA-1, SHA-256, SHA-384, or SHA-512) or check Compute all algorithms to generate every hash at once. Click Generate Hash or press Ctrl/Cmd+Enter. Copy any result with the copy button next to it.
Frequently Asked Questions
What hash algorithms are supported?
MD5, SHA-1, SHA-256, SHA-384, and SHA-512. SHA-256 is the recommended choice for most modern use cases. MD5 and SHA-1 are provided for compatibility but are no longer considered cryptographically secure.
Is my text or file uploaded anywhere?
No. All hashing runs entirely in your browser. Text is hashed using the Web Crypto API (SubtleCrypto). Files are read and hashed locally using chunked streaming — no data is ever sent to a server.
How large a file can I hash?
There is no hard file-size limit beyond your browser's available memory. Files are processed in 2 MB chunks with a progress bar, so you can hash files several gigabytes in size without freezing the browser.
Can I compute multiple hashes at once?
Yes. Check the <em>Compute all algorithms</em> checkbox before clicking Generate Hash to produce MD5, SHA-1, SHA-256, SHA-384, and SHA-512 simultaneously.
What is the difference between MD5, SHA-1, and SHA-256?
MD5 (128-bit) and SHA-1 (160-bit) are fast but vulnerable to collision attacks and should not be used for security. SHA-256 (256-bit) and above are part of the SHA-2 family and remain cryptographically strong.
Can I use this to verify a file download?
Yes. Download the file, drop it into the File tab, select the algorithm that matches the provided checksum (often SHA-256), and click Generate Hash. Compare the result to the checksum published by the file's author.