Interactive Periodic Table

Search and inspect an interactive periodic table with element details, categories, groups, periods, and standard atomic-weight values.

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Hydrogen (H)Atomic number 1 · atomic weight 1.008

1Atomic number

1.008Atomic weight

1Group

1Period

How to use this Interactive Periodic Table

Explore all 118 chemical elements by atomic number, symbol, group, period, category, and atomic weight. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.