About Periodic Table X

Periodic Table X is a free, interactive periodic table built for students, teachers and anyone who is curious about the elements.

What you can do here

Explore all 118 elements on an interactive table, color it by any property, read a full page for every element, practice with quizzes and use free chemistry tools such as the molar mass calculator.

Everything works on phones, tablets and computers, and every page also works without JavaScript.

Where the data comes from

Element properties come from a curated dataset checked against PubChem, the open chemistry database of the US National Center for Biotechnology Information (NCBI). Values that are unknown or only predicted for the superheavy elements are shown as “—”.

Spotted a mistake? Please tell us on the contact page and we will fix it.