Bitcoin Hashrate historical levels
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFpjNcv57FklQWDRceATT_nYJ49N0PC19S5ZC5Ll5V-77-wfgarIttWOt1QlKskY2ASrIR_Z_dBgSqMDOFgK7CBuGdxLCGeSd0sAoDmM6MbAKN7Brf8F1gC6bHAykpmFRSFLmg6YUzdhp4/w469-h322/image.png)
* reference MH -Megahash = 1 000 000 = 1000*2 GH -Giga = 1 000 000 000 = 1000 *3 TH -Tera = 1 000 000 000 000 = 1000* 4 PH -Peta = 1 000 000 000 000 000 = 1000 *5 EH -Exa = 1 000 000 000 000 000 000 = 1000* 6