Free Interactive Periodic Table

Free Interactive Periodic Table Online

Explore every element in the periodic table with an interactive, feature-rich tool that rivals paid apps like Merck PTE and Periodic Table Pro — completely free and without signing up. Free Tool Shed's periodic table runs entirely in your browser with no downloads or accounts required. Search by name, symbol, or atomic number. Visualize property trends with heatmaps. Watch phase transitions in real time with the temperature slider. Calculate molar masses, build electron configurations, compare elements side by side, and export data in four formats.

Features

• All 118 elements with 20+ properties each
• Color-coded by category — alkali metals, noble gases, transition metals, and more
• Temperature mode — slide from 0 K to 6000 K and watch elements change phase
• Property heatmaps — visualize electronegativity, density, atomic radius, and 5 more
• Molar mass calculator — supports H2SO4, Ca(OH)2, brackets, and subscripts
• Electron configuration builder — interactive orbital filling with Hund's rule
• Element comparison — compare up to 4 elements with bar charts
• Element detail panel — full data card with Bohr model, isotopes, discovery, and uses
• Search and filter by name, symbol, number, block, state, or category
• Export as CSV, JSON, PDF, or PNG with customizable property selection
• Dark and light mode with automatic theme detection
• Settings persistence — your view mode and temperature are remembered
• Responsive layout — works on desktop and tablet
• No sign-up, no download, no ads inside the tool workspace
• Completely client-side — your data never leaves your browser
• Print-ready PDF export with branded header and 118-element data table

How to Use the Interactive Periodic Table

1. 1

   Browse the table

   Hover over any element to see a tooltip with its name, symbol, atomic mass, and electron configuration. Click an element to open its full detail panel.

2. 2

   Switch view modes

   Use the toolbar to switch between Categories (color-coded by type), Temperature (phase states at any temp), and Heatmap (gradient by property) views.

3. 3

   Explore temperature phase changes

   In Temperature mode, drag the slider from 0 K to 6000 K or use preset buttons (Room Temp, Iron Melts, Sun Surface) to watch elements change between solid, liquid, and gas states.

4. 4

   Calculate molar mass

   Click 'Molar Mass' in the toolbar, type a chemical formula like C6H12O6, and instantly see the total mass with a full element breakdown showing each atom's contribution.

5. 5

   Compare and export

   Click 'Compare' to select up to 4 elements for side-by-side bar charts. Click 'Export' to download element data as CSV, JSON, PDF, or PNG with your choice of properties.

Free Tool Shed vs. Paid Periodic Table Apps

Frequently Asked Questions

Is the periodic table completely free to use?

Yes. Free Tool Shed's interactive periodic table is 100% free with no sign-up, no download, and no usage limits. The tool is supported by non-intrusive ads displayed outside the workspace.

How accurate is the element data?

All element data — atomic masses, melting points, boiling points, electronegativities, and other properties — is sourced from IUPAC-recommended values and peer-reviewed references. Data covers all 118 confirmed elements.

How does the temperature slider work?

Switch to Temperature mode and drag the slider from 0 K (absolute zero) to 6000 K. Each element's cell changes color to show whether it is solid (blue), liquid (green), or gas (orange) at that temperature, based on its melting and boiling points.

What formulas does the molar mass calculator support?

The calculator handles simple formulas (H2O, NaCl), parentheses (Ca(OH)2), brackets ([Cu(NH3)4]SO4), nested groups (Mg3(PO4)2), hydrate notation (CuSO4·5H2O), and Unicode subscript digits.

Can I export the periodic table data?

Yes. Click the Export button to download element data as CSV (for spreadsheets), JSON (for developers), PDF (print-ready table with all selected properties), or PNG (screenshot of the current table view). You can choose which properties to include.

Does the electron configuration builder follow the Aufbau principle?

Yes. The builder fills orbitals in the standard Aufbau order (1s → 2s → 2p → 3s → ...) and displays electrons following Hund's rule (maximum spin multiplicity). You can also click individual orbital boxes to create custom configurations.

Does the tool work on mobile?

The periodic table is optimized for desktop viewports (1024px+) where you can see the full 18-column layout. It is usable on tablets in landscape mode. On phones, horizontal scrolling is available but the experience is best on larger screens.

Is my data stored anywhere?

No data is sent to any server. The tool runs entirely in your browser. Your view preferences (mode, temperature, heatmap property) are saved in your browser's localStorage so they persist between visits.

What is a property heatmap?

A property heatmap recolors every element cell on a gradient from blue (low) to orange (high) based on a selected property — such as electronegativity, atomic radius, ionization energy, or density. This makes periodic trends immediately visible at a glance.

How do I compare elements?

Click the Compare button in the toolbar, then click up to 4 elements on the table. A comparison panel appears below with bar charts for atomic mass, electronegativity, atomic radius, ionization energy, density, melting point, boiling point, and electron affinity.