Hashrate units

Hashrate is measured in hashes per second, written H/s. Because machines compute enormous numbers of them, we use the prefixes of the International System of Units: kH/s for a thousand, MH/s for a million, GH/s for a billion, TH/s for a trillion, then PH/s and EH/s for large farms and entire networks. For the Equihash algorithm, solutions per second are counted instead, in Sol/s or kSol/s.

Each step up is worth 1,000 times the one before. So 1 TH/s equals 1,000 GH/s, and 1 PH/s equals 1,000 TH/s. A network running at 1 EH/s represents a million TH/s. Each algorithm therefore has its usual unit: Bitcoin's SHA-256 is counted in TH/s per machine, Litecoin's Scrypt in GH/s, Equihash in kSol/s, and graphics cards are often rated in MH/s.

Watch out for misleading comparisons: a bigger number does not mean a more powerful machine if the algorithms differ. A Scrypt hash takes far more work than a SHA-256 hash, hence the smaller figures. On a product page, always read the unit and the algorithm together, and convert everything to the same unit before comparing two models or filling in a profitability calculator.

Our hashrate converter does these conversions for you, from H/s all the way up to EH/s, with no risk of getting the zeros wrong.