Hash Calculator

Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.

Input Text

Hash Results

MD5

32 characters

SHA-1

40 characters

SHA-256

64 characters

SHA-512

128 characters

Hash calculator for text

Paste text and get MD5, SHA-1, SHA-256, and SHA-512 hash values right away. This is useful when you need to check a file note, compare API data, or create a quick checksum.

MD5: Good for old checksums, not for security.
SHA-1: Still seen in older tools, but not recommended for new security work.
SHA-256: A common choice for modern checksums and signatures.
SHA-512: A longer SHA-2 hash for cases that need a bigger output.

Hash checks

A hash is useful when you need a stable fingerprint for text. It is not a way to hide sensitive data: the same input always produces the same output for a given algorithm.

When should I use a hash?

Use a hash when you want to compare data without reading the whole text again. If one character changes, the hash changes too.

Useful when

Check whether two strings are the same
Verify downloaded text or file content
Debug webhook signatures and API examples
Create test data for docs or code reviews

How to use Hash Calculator

The hash calculator creates MD5, SHA-1, SHA-256, and SHA-512 hashes from text. It is useful for checksums, comparisons, and simple debugging tasks.

Developers often use this page when they need online hash calculator, sha256 hash calculator, md5 hash checker, and sha256 hash generator.

Privacy and data handling

This tool can handle security-sensitive text, so it is meant for local inspection and test data.

Normal use does not require uploading your input to a server.
Use redacted tokens, passwords, secrets, headers, and connection strings when possible.
Copy buttons use your browser clipboard permission, so clear the clipboard after handling secrets.

Examples

Calculate a SHA-256 hash

Input

hello

Output

2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824

A hash changes completely when the input changes by even one character.

Steps

1Paste the text you want to hash.
2Choose or review the hash algorithms shown.
3Copy the hash value you need.

Common use cases

Compare whether two text values are identical.
Create a checksum for a small sample.
Debug integrations that expect a hash value.

Practical tips

MD5 and SHA-1 are not recommended for secure password storage.
Use a slow password hashing method like bcrypt for passwords.
A small input change creates a very different hash.

FAQ

Can a hash be reversed?

A good cryptographic hash is one-way. But weak inputs can be guessed with dictionaries or brute force.

Which hash should I use?

For simple checksums, SHA-256 is a common choice. For passwords, use bcrypt, scrypt, or Argon2 instead of a plain hash.