First select the coin, then your device - or freely enter hashrate and power consumption from the datasheet. The most important lever is your electricity price per kilowatt-hour: it determines where the break-even point lies. The calculator shows daily yield, electricity costs, results per day, week and month, as well as the break-even electricity price. All outputs are a calculation example with no guarantee, based on current network data - every calculation is a snapshot, not a promise of earnings.
Price and network hashrate cannot be predicted. The calculator therefore works with scenarios: you set the price and difficulty development you want to assume, and immediately see how the result changes. In the Pro section, you can additionally factor in pool fee, uptime, tax and financing.
A miner's yield results from the ratio of your own hashrate to the network hashrate, multiplied by the network's daily payout and the price. How these network figures develop is shown on the Network Hashrate pages; which device performs best at your electricity price is shown by the Miner Comparison.
Whether a miner pays off depends mainly on the electricity price. When operating at home, alongside the electricity price, the setup location, operating noise and waste heat matter. For operation outside your own four walls, Cryptohall24 hosts ASIC miners in its own partner data centres. Simply enter the electricity price relevant to you to run your scenario. More on this at Mining hosting at Cryptohall24.