By EPA To ensure informed chemical safety decisions can be made about thousands of chemicals, scientists and decision makers need a constantly evolving set of tools for quickly and efficiently evaluating chemicals of interest. EPA scientists have recently released an update to the online Computational Toxicology (CompTox) Chemicals Dashboard to help advance these efforts. The website has been updated with new data and functionality every six months for the past three years. The CompTox Chemicals Dashboard is a one-stop-shop for chemistry, toxicity, exposure, and bioactivity data that allows for searches based on chemical identifiers (e.g. names and CAS Registry numbers), product categories that chemicals are found in, and assay and gene associations with the bioactivity data from the ToxCast and Tox21 projects. The latest version, released in March 2019, adds 110,000 chemicals and associated data, bringing the total number of chemicals to 875,000. The dashboard release also includes several new improvements to the user interface allowing for improved navigation for all data associated with the chemicals collection.