Fare calculation is the process of determining the cost of a trip based on various factors. These factors often include the distance traveled, the type of service used, and any applicable surcharges or discounts. For example, taxi fares may vary depending on the time of day or the number of passengers. In public transportation, such as buses or trains, fare calculation can also depend on zones or specific routes. Fare calculators are often used to help passengers estimate their travel costs before starting their journey, ensuring they are prepared for the expenses involved.