CORONET is an online tool to support decisions regarding hospital admissions or discharge in cancer patients presenting with symptoms of COVID-19 and the likely severity of illness. It is based on real world patient data. This is an early version that could possibly change. The model is currently undergoing peer review and we would be grateful for feedback as to utility of this tool (email firstname.lastname@example.org or tweet @beckilee @CORONET). It should not be used for patient management currently (pending peer review). Detailed information as to how version 2 of the tool was created can be found in the pre-print on Preprints with THE LANCET. Version 1 is available at medRxiv. Version 2 uses data from many countries and new analysis has resulted in an update of the features important for the model.