The Mining Hardware Efficiency Calculator helps users assess how efficiently their crypto mining hardware converts electricity into computational power. By inputting the hash rate (in MH/s), power consumption (in watts), and electricity cost (per kWh), the tool calculates the efficiency in megahashes per watt and estimates daily power costs. This is especially useful for miners to compare different GPUs, ASICs, or rigs to find the most energy-efficient hardware for maximizing profitability.