Blockchain Hash Calculator

Generate cryptographic hashes and simulate Proof-of-Work mining.

Input Type:

Text String File Upload

Data to Hash:

Upload File:

Drag & Drop file here

Algorithm:

Calculated Hash:

// Hash will appear here

Proof-of-Work Demo: Adjust the "Nonce" manually or click "Mine" to find a nonce that produces a hash starting with 0000.

Invalid Block

Block Number:

Nonce (The variable we change):

Data:

Block Hash:

About Blockchain Hashing

Cryptographic hashing is the backbone of blockchain immutability. It transforms any input data into a fixed-size string of characters.

Key Algorithms

SHA-256: Used by Bitcoin. It produces a 256-bit (64 character hex) hash. Even a slight change in input changes the output completely (Avalanche Effect).
Keccak-256: Used by Ethereum. It is the original version of SHA-3 but with different padding parameters.
RIPEMD-160: Used in Bitcoin address generation (after SHA-256) to create shorter addresses.

What is Mining?

In Proof-of-Work (like Bitcoin), miners compete to find a numeric value called a Nonce. When this Nonce is combined with the block data and hashed, the resulting hash must start with a specific number of zeros (the Difficulty).