In Strava Metro, carbon savings estimates are calculated from activities tagged or identified as commutes. Commutes in Strava Metro are utilitarian trips completed on a bike or on foot, and are identified either by a Strava user tagging their activity as a commute, or by being automatically detected as such.
You can learn more about how commutes are identified in Strava Metro in the Commutes Help Center article.
The Estimated Carbon Saved chart on the Metroview Dashboard displays estimated carbon emissions savings, shown in kilograms of CO₂. This estimate represents the difference between completing a trip using active transportation and completing the same trip using an average personal passenger vehicle.
These estimates are based on emissions factors from the 2021 US Environmental Protection Agency (EPA) reportreport. While actual emissions can vary depending on vehicle type, trip conditions, and other factors, this metric is intended to provide a consistent, high-level reference for understanding the potential carbon impact of commute trips.
To learn more about carbon savings estimates on commutes in the core Strava application, read this article from Strava Help & Support.