In crypto mining, hashrate is a fundamental security indicator that indicates how much computational power is employed each second. It is a term used to describe the rate at which mining occurs. It is expressed in hash/second, which shows the number of calculations that can be accomplished in a second. Machines with high hash power are incredibly efficient and useful because they can process a big quantity of data in a single second.
Hashrate is usually measured in units of k (kilo, 1000), M (mega, 1 million), G (giga, 1 billion) and T (tera, 1 trillion). For example, 1 M hash/s indicates 1 million hash calculations are done every second.