Risk Calculator

Nearly all activity that involves others will pose some level of risk during a pandemic.

The below graphic illustrates common activities and their approximate risk. This calculator is intended to help you determine how risky various activities and their combination of factors might be. Please use the drop down menus to determine how risky your proposed activities are. Multiple exposures to even low risk activities will increase overall risk.

This calculator may be updated as new information is made available.

Chu, Derek K., Elie A. Akl, Stephanie Duda, Karla Solo, Sally Yaacoub, Holger J. Sch√ľnemann, Amena El-harakeh et al. "Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta-analysis." The Lancet (2020).

Lindsley, William G., John D. Noti, Francoise M. Blachere, Jonathan V. Szalajda, and Donald H. Beezhold. "Efficacy of face shields against cough aerosol droplets from a cough simulator." Journal of occupational and environmental hygiene 11, no. 8 (2014): 509-518.

Leclerc, Quentin J., Naomi M. Fuller, Lisa E. Knight, Sebastian Funk, Gwenan M. Knight, and CMMID COVID-19 Working Group. "What settings have been linked to SARS-CoV-2 transmission clusters?." Wellcome Open Research 5, no. 83 (2020): 83.

Asadi, Sima, Anthony S. Wexler, Christopher D. Cappa, Santiago Barreda, Nicole M. Bouvier, and William D. Ristenpart. "Aerosol emission and superemission during human speech increase with voice loudness." Scientific reports 9, no. 1 (2019): 1-10.


This calculator is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. This information is not intended to replace the advice of your physician. This information may not meet your needs. This calculator is based upon assumptions about a particular activity and particular events described in a category may vary dramatically. Although the information is derived from medical research and literature we cannot guarantee either its correctness, comprehensiveness or currency. The User of this calculator assumes sole responsibility for any decisions made or actions taken based on the information contained in this system.

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