SHA-1 Hash Generator
Generate SHA-1 hashes from text or files
Security Notice: SHA-1 is Deprecated
SHA-1 is cryptographically broken and should not be used for security purposes (passwords, digital signatures, SSL certificates). Use SHA-256 or SHA-3 instead. SHA-1 is still used in Git for commit hashes and acceptable for non-security checksums.
Input
Enter text or upload a file
SHA-1 Hash
Generated hash output
About SHA-1
What is SHA-1?
SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function that produces a 160-bit (20-byte) hash value, typically rendered as a 40-character hexadecimal number. It was designed by the NSA and published in 1995.
Features
- Generates 160-bit (40 hex character) hash
- Faster than SHA-256 but less secure
- Deterministic output
- One-way function
- Supports text and file hashing
Generate SHA-1 hash digests from text input. SHA-1 produces a 160-bit (40 hex character) hash value. Used for git commits, file checksums, and legacy systems. For new security use cases, SHA-256 is recommended instead.
Key Features
- ✓Generate SHA-1 hash from text
- ✓40-character hex output
- ✓Instant computation
- ✓One-click copy
How to SHA-1 Hash Generator
- 1
Enter text
Type or paste text to hash.
- 2
SHA-1 hash is generated
The 40-character hex hash appears.
- 3
Copy hash
Click copy for the SHA-1 digest.
Common Use Cases
- •Computing git-style object hashes
- •Verifying file checksums
- •Legacy system hash verification
- •Generating deterministic IDs from content