The Green Factor Tool is an innovative online platform developed by the City of Melbourne to assess the quantity and quality of green infrastructure in development proposals. The tool calculates a 'green factor' score based on various elements including canopy trees, permeable surfaces, green roofs, and green walls. It provides developers, planners, and designers with a standardized method to evaluate and improve the green infrastructure performance of projects. The tool supports evidence-based decision-making and helps ensure developments contribute meaningfully to urban greening targets. A launch webinar from 2020 provides detailed guidance on using the tool effectively.