Estimate your probability of finding a Bitcoin block when solo mining. Enter your hashrate and get real-time chances based on current network difficulty.
Estimate your chances of finding a Bitcoin block based on your hashrate and the current network difficulty.
The network difficulty is a measure of how hard it is to find a valid hash that solves a Bitcoin block. Bitcoin uses the SHA-256d hashing algorithm, and miners must find a hash that is lower than a specific target. This target is expressed in terms of difficulty and corresponds to a hash that starts with a certain number of leading zeros.
The higher the difficulty, the lower (and rarer) the valid hash must be. In other words, only 1 out of billions, trillions, or even quadrillions of hashes will be accepted as a valid solution.
The difficulty value determines the threshold a miner’s hash must be below. For each block, a new hash is computed based on the block header. The hash of the winning block, the one included in the blockchain, is always lower than this difficulty-derived target.
So, the difficulty is directly related to the value of the latest block hash: that hash is always below the required threshold defined by the current difficulty.
You could find a block on your first try, or not at all. The values shown in the calculator are based on statistical averages, not guarantees.