The LESCO bill calculator is an online tool that helps electricity consumers estimate their monthly electricity bill based on the number of units they use. By entering total consumed units and selecting the consumer category (such as protected or non-protected), the calculator provides an estimated bill amount according to current LESCO and NEPRA tariff rates. This estimated bill includes electricity charges, GST, fuel price adjustment (FPA), fixed charges, and other government taxes, giving users a clear idea of their expected monthly cost. It is useful for budgeting, monitoring electricity usage, and avoiding unexpected high bills by allowing consumers to plan their energy consumption in advance.