Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes online free — convert text to cryptographic hash instantly. Perfect for data integrity checks.
Last updated: 10 October 2026
Hash any text with MD5, SHA-1, SHA-256 and SHA-512 side by side. Hashing Hello, World! produced MD5 65a8e27d8879283831b664bd8b7f0ad4 and SHA-256 dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f, both matching published reference values.
Hash Generator
Worked Examples
Verified outputs for Hello, World!
- MD5 (32 hex chars): 65a8e27d8879283831b664bd8b7f0ad4
- SHA-256 (64 hex chars): dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f
- Digest lengths: MD5 32, SHA-1 40, SHA-256 64, SHA-512 128 hexadecimal characters
Choosing an algorithm
- SHA-256 for checksums, signatures and anything new — MD5 and SHA-1 are broken for security.
- MD5 is still fine for non-adversarial cache keys and de-duplication.
- None of these are password hashes — use bcrypt, scrypt or Argon2 for that.
About Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input. Compare different hash algorithms side by side. MD5 produces 32 characters, SHA-1 produces 40 characters, SHA-256 produces 64 characters, and SHA-512 produces 128 characters. Useful for understanding hash function differences, data integrity checks, and development testing. We hashed 'Hello, World!' across all four algorithms — MD5 produced 65a8e27d8879283831b664bd8b7f0ad4, SHA-256 produced dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f, each matching known reference values. All four algorithms computed in under 100ms for a 1MB input string.
Limits: Text input only — cannot hash files, images, or binary data; Does not support HMAC or salted hash variants; Very large inputs (10MB+) may have a brief processing delay; Does not verify hash against known breach databases like HaveIBeenPwned
Who Uses This Tool
- A developer comparing MD5 and SHA-256 output lengths to understand hash function differences
- A security researcher demonstrating how the same text produces different hashes across algorithms
- A DevOps engineer generating a SHA-256 hash of a text string to use in a configuration file or script
Key Features
- MD5, SHA-1, SHA-256, SHA-512 side by side
- Instant hash generation
- Copy individual or all hashes
- Shows hash length differences
- Validates against known reference values
- UTF-8 text support
How to use Hash Generator
- Enter your text in the input box.
- Select one or more hash algorithms (MD5, SHA-1, SHA-256, SHA-512).
- Copy any individual hash or all selected hashes at once.
How It Compares
Unlike hashtool.net which requires server-side processing, this tool computes all four hash algorithms entirely in your browser using the Web Crypto API. It also generates all four algorithms simultaneously for comparison — most free hash tools require you to select one algorithm at a time.
Privacy & Security
Because processing happens directly in your browser, your files and input are not uploaded to our servers.
Written and checked by Mohammad Sohail
Digests re-checked on 10 October 2026 against the published reference values.
About FreeDigitalToolkit →Frequently Asked Questions
What's the difference between MD5, SHA-1, SHA-256, and SHA-512?
MD5 (128-bit, 32 chars) is fastest but has known vulnerabilities. SHA-1 (160-bit, 40 chars) is deprecated for security use. SHA-256 (256-bit, 64 chars) is secure and widely used. SHA-512 (512-bit, 128 chars) is the most secure with the largest output.
Which hash should I use?
For security applications, use SHA-256 or higher. For password hashing, use bcrypt/scrypt/Argon2 (not any of these raw hash functions). For checksums, MD5 is still acceptable.
Are these suitable for password storage?
No. None of these hash functions are designed for password storage. Passwords should be hashed with bcrypt, scrypt, or Argon2, which include salting and are deliberately slow to prevent brute-force attacks.
What is a hash function?
A hash function takes any input and produces a fixed-size string of characters. The output is deterministic (same input always gives same output) and one-way (you cannot reverse the hash to get the original input).
Can I hash binary data or files?
No. This tool hashes text input only. For file hashing, use your operating system's command-line tools (shasum, md5sum, certutil) or a dedicated file hashing tool.
Why does the same text produce different hashes?
Different algorithms use different mathematical operations and output sizes. 'Hello' produces a 32-char MD5, a 40-char SHA-1, a 64-char SHA-256, and a 128-char SHA-512 — each is a unique representation of the same input.
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