Sustainability metrics are tools used to measure and evaluate the environmental, social, and economic impacts of activities or organizations. These metrics help assess how well practices align with sustainability goals, such as reducing carbon emissions, conserving resources, and promoting social equity. Common examples include carbon footprint, water usage, and waste generation. By using sustainability metrics, businesses and governments can identify areas for improvement and track progress over time. This data-driven approach supports informed decision-making and encourages accountability, ultimately contributing to a more sustainable future for communities and the planet.