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Periodic Table
Interactive periodic table with masses, categories, electron configurations and shell diagrams.
Free, no uploads, no sign-up. Runs 100% in your browser.
How Periodic Table works
Standard atomic weights from IUPAC. Electron configurations follow the Aufbau order with the known exceptions such as chromium and copper.
How to use Periodic Table
- Tap an element to see its details.
- Search by name, symbol or number.
- Tap a category to highlight it.
Tips
- Exact fractions are used where rounding would give wrong answers.
- Every tool works offline once the page has loaded.
Periodic Table FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
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