Hash rate measures the total computational power being used by miners to process transactions and mine new blocks on a proof-of-work blockchain. It represents the number of hash calculations performed per second across the entire network.
Units
KH/s: Kilohash (thousands of hashes per second).
MH/s: Megahash (millions).
GH/s: Gigahash (billions).
TH/s: Terahash (trillions).
EH/s: Exahash (quintillions) — Bitcoin's network operates at hundreds of EH/s.
Why Hash Rate Matters
Security: A higher hash rate means the network is more secure, as an attacker would need to control an enormous amount of computing power for a 51% attack.
Mining Difficulty: Hash rate and difficulty are correlated — when more miners join, hash rate rises, and difficulty adjusts upward.
Network Health: A growing hash rate indicates miner confidence and investment in the network's future.