SquareCalc is a free Chrome add-on designed to streamline the process of calculating the price per square foot or square meter for property listings on Rightmove. With just a click, users can obtain accurate calculations without the hassle of manual entry. The tool captures the listing price and scans for the floor-plan, extracting relevant data to provide quick results.

The functionality includes the ability to manually input values in case of scanning errors, ensuring flexibility and accuracy. Users can toggle between square feet and square meters based on their preference, and historical calculations are stored for future reference. The plugin operates efficiently, with a typical calculation time ranging from 2 to 8 seconds, depending on the complexity of the floor-plan.