Hash & Checksum
Generate SHA-1, SHA-256, SHA-384, and SHA-512 digests of text
About this calculator
The Hash & Checksum Calculator generates SHA-1, SHA-256, SHA-384, and SHA-512 digests of any text using the browser's native Web Crypto API — nothing leaves your device. Each digest is shown as lowercase hex and standard base64, together with the digest length and the input's UTF-8 byte count. MD5 and CRC32 are not offered because Web Crypto does not expose them. Useful for verifying downloads, comparing strings, and generating stable identifiers.
How to use the Hash & Checksum tool
- Enter or paste your input into the field.
- Read the output — it updates instantly as you type.
- Adjust the options, if any, to fit your use case.
- Copy the page URL to share the exact result.
Common examples
- SHA-256 of "hello" → 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
- SHA-1 of "hello" → aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d (40 hex chars)
- SHA-512 of "The quick brown fox jumps over the lazy dog" → 07e547d9586f6a73… (128 hex chars, 43 input bytes)
Frequently asked questions
How does the Hash & Checksum tool work?
Enter or paste your input and the tool processes it directly in your browser, showing the result immediately. Nothing you type is uploaded to a server — the entire computation happens on your device.
When would I use the Hash & Checksum tool?
It is handy for development, debugging, design and administration tasks — whenever you need this transformation or check done quickly without installing anything or trusting a third-party service with your data.
How reliable are the results?
The tool implements the relevant standard or specification directly, so its output matches what compliant software produces. Edge cases such as empty or malformed input are reported clearly instead of failing silently.
Can I share a specific result with someone else?
Yes. Your input updates the URL, so copying the address bar and sharing the link reopens the tool in the same state for whoever clicks it.