SHA1 Hash Generator

About SHA1 Hash Generator

Create a SHA1 hash from any text in seconds. It is fast and private.

What is SHA1?

SHA1 makes a 160-bit hash (40 hex characters). It is older and weaker than newer options like SHA-256. Many tools still use it, including Git and some legacy systems.

Key Features

• Real-time: The hash updates as you type
• One-click copy: Copy the result with a button
• Private: Everything runs in your browser
• Mobile friendly: Works well on phones and tablets
• No sign-up: Use it right away
• Unlimited: No limits

Common Uses

• File checks: Compare hashes to spot changes
• Version control: Git commit IDs use SHA1
• Document tags: Make a quick fingerprint
• Data dedupe: Find duplicates
• Caching keys: Create stable IDs
• Licenses: Simple identifiers

Security Notes

• Do not use SHA1 for new security work
• It is vulnerable to collisions
• For security, prefer SHA-256 or SHA-3
• OK for non-security tasks like checksums

How to Use

• Type or paste your text
• Copy the hash
• Use Clear to reset

The tool runs fully in your browser. No installs. After the first load, it also works offline.