SHA256 Hash Generator

Summary

Type or paste any text and instantly get its SHA-256 hash computed entirely in your browser.

How it works

1. Type or paste the text you want to hash into the input area.
2. The tool encodes your text as UTF-8 bytes.
3. The Web Crypto API's SubtleCrypto.digest() method computes the SHA-256 hash.
4. The resulting 32-byte ArrayBuffer is converted to a 64-character lowercase hex string.
5. The hash updates automatically as you type — no button press needed.
6. Click the copy button to copy the hash to your clipboard.

Use cases

• Verify file or message integrity by comparing SHA-256 checksums.
• Hash passwords or tokens during local development and testing.
• Generate deterministic identifiers from text strings.
• Cross-check hashes published by software download pages.
• Experiment with cryptographic concepts without installing tools.
• Quickly hash API keys or secrets when building authentication flows.

Frequently Asked Questions