SHA1/SHA256/SHA512 Hash Generator Tool

Free online SHA1, SHA256 and SHA512 hash generator with multiple algorithm and format support. Secure cryptographic hash functions for data integrity verification, password storage, and digital signatures.

Text Input

Enter the text to generate hash with SHA1, SHA256 and SHA512 algorithms

Hash Output
SHA512

Generated hash values will be displayed in multiple formats

Hash values will be displayed here...

What is SHA Hash Algorithm?

SHA (Secure Hash Algorithm) is a family of cryptographic hash functions designed by the NSA. SHA-1 produces 160-bit hash values, SHA-256 produces 256-bit hash values, SHA-512 produces 512-bit hash values, and they are widely used for data integrity verification and digital signatures.

  • SHA-1: Produces 160-bit (40 hexadecimal characters) hash values
  • SHA-256: Produces 256-bit (64 hexadecimal characters) hash values
  • SHA-512: Produces 512-bit (128 hexadecimal characters) hash values
  • One-way cryptographic function - computationally irreversible
  • Collision-resistant - difficult to find different inputs with same hash
  • Deterministic - same input always produces same output
  • Avalanche effect - small input changes cause dramatic output changes

How to Generate SHA Hash

1

Step 1: Select Algorithm

Choose SHA-1, SHA-256 or SHA-512 algorithm from the dropdown menu

2

Step 2: Enter Text

Type or paste the text you want to hash in the input area

3

Step 3: View Results

All supported hash values are displayed instantly in the output area

4

Step 4: Copy Hash

Click the copy button to copy the desired hash value

Common SHA Hash Use Cases

Secure Password Storage

Safely store user password hashes in databases

File Integrity Verification

Verify the integrity and authenticity of downloaded files

Digital Signatures

Create unique digital fingerprints for documents and messages

Blockchain Technology

Used in proof-of-work for cryptocurrencies and blockchain

SSL/TLS Certificates

Digital signature algorithms used in website security certificates

Git Version Control

Git uses SHA-1 to identify commits and objects

Why Use Our SHA Hash Generator?

Multi-Algorithm Support

Support SHA-1, SHA-256 and SHA-512 algorithms for different security needs

Multiple Format Output

Provide hash output in both uppercase and lowercase formats

Real-time Calculation

Instant hash calculation as you type your input

Client-side Processing

All calculations happen in your browser, protecting data privacy

No Length Limit

Support arbitrary length text input

Cross-platform Compatible

Works on all modern browsers and devices

SHA Algorithm Comparison

AlgorithmOutput SizeSecurityPerformanceBest Use
SHA-1160-bit (40 chars)
Medium
Fast
Git commits, legacy systems
SHA-256256-bit (64 chars)
High
Medium
Password storage, digital signatures
SHA-512512-bit (128 chars)
Very High
Slower
High-security applications
MD5128-bit (32 chars)
Low
Fastest
Checksums, non-security purposes

Security and Best Practices

SHA algorithms are the foundation of modern cryptography, but must be used following security best practices.

  • SHA-256 is more secure than SHA-1, recommended for new projects
  • Use salt values when storing passwords
  • Regularly update to the latest security standards
  • Avoid using SHA-1 in security-critical applications
  • Use strong random number generators for salt values
  • Consider using specialized password hash functions like bcrypt

SHA Hash Pro Tips

SHA hashes are case-sensitive in input, tiny changes produce completely different outputs

Empty string SHA-256 hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA-256 is widely used by cryptocurrencies like Bitcoin

Git uses SHA-1 to identify the uniqueness of each commit

SHA algorithms have avalanche effect: tiny input changes cause dramatic output changes

Use SHA hashes to quickly compare if large files have the same content

In password storage, SHA hashes should always be combined with salt values