A calculator for how risky an activity is during COVID. We reviewed published research about COVID, and used it to make rough estimates about the risk level of various activities in microCOVIDs. 1 microCOVID is a one-in-a-million chance of getting COVID. We hope you’ll use this tool to build your intuition about the comparative risk of different activities and as a harm-reduction tool to make safer choices. Play around with the calculator! Change the variables and see how they affect the total. Important: In this tool we state our best estimate based on available evidence, even when that evidence is not conclusive. We have read a lot of experts' research, but we are not ourselves experts in this topic. This work has not been scientifically peer-reviewed. There is still a lot of uncertainty about COVID. Do not rely on this tool for medical advice. Please continue to follow government guidance.

Explore hospital bed use, need for intensive care beds, and ventilator use due to COVID-19 based on projected deaths

The public deserves the most complete data available about COVID-19 in the US. No official source is providing it, so we are. Every day, our volunteers compile the latest numbers on tests, cases, hospitalizations, and patient outcomes from every US state and territory.