Hash Rate

Hash rate measures how many hash calculations the mining network performs each second. For Bitcoin it is quoted in exahashes per second, where one exahash is one quintillion hashes, written as a 1 followed by 18 zeros. Because the protocol adjusts difficulty to keep blocks arriving every 10 minutes, a higher hash rate does not make the chain faster; it makes it more secure.

Bitcoin's hash rate has grown almost continuously, from a few megahashes per second in 2009 to hundreds of exahashes per second by the mid 2020s, and it set new records through 2024 and 2025. Hash rate cannot be measured directly; it is estimated from how quickly blocks are being found relative to the current difficulty, so daily figures are noisy and weekly averages are more meaningful.

Analysts watch hash rate as a signal of miner confidence and network health. A sustained drop can indicate miners shutting down because prices have fallen below their costs, as happened after the 2021 Chinese mining ban and during the 2022 bear market. A rising hash rate means more hardware is being deployed, which raises the cost of attacking the network.