What is hashrate?
Hashrate is the number of SHA-256 hash attempts a miner, a pool or the whole Bitcoin network makes each second. It is the measure of mining power.
How it works
One hash is one guess at a valid block. A modern machine makes hundreds of trillions of guesses a second, so hashrate is counted in terahashes (TH/s, a trillion), petahashes (PH/s, a thousand TH/s) and exahashes (EH/s, a million TH/s). Nobody can read the network's hashrate directly; it is estimated from the difficulty and from how fast blocks are arriving.
Why it matters
Your share of the network's hashrate is your share of the blocks, on average. When network hashrate rises and yours does not, you earn less bitcoin with the same machines.
Live figures: Bitcoin hashrate today.
Related terms
All terms: the Bitcoin mining glossary.
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March 22–24, 2027 · Irving Convention Center · Dallas
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