The BA Avios Cost Calculator is a Chrome extension designed to assist users in maximizing the value of their British Airways reward flights. This tool simplifies the process of finding the most cost-effective redemption options, ensuring that users do not overpay for their reward bookings. By providing a streamlined interface, it allows users to quickly compare pricing options for their desired flights.

Key features include the ability to customize Avios values according to user preferences or select from commonly used values. The extension supports multiple currencies such as GBP, EUR, and USD, making it accessible to a broader audience. This functionality ensures that users can efficiently calculate and save money on their reward flight redemptions.