Daniel Larremore a Minerva-funded researcher and colleagues have built an online calculator that can use the calibration data of a specific test to predict is sensitivity and specificity. The COVID-19 Testing Group is a community resource for sharing the latest information on COVID-19 prevalence, seroprevalence, and burden studies, planning tools, and data. This website is maintained jointly by the Larremore Lab at the University of Colorado, Boulder and the Grad Lab at the Harvard T.H. Chan School of Public Health.
Link: https://larremorelab.github.io/covid19testgroup