Is this periodic table tool really free?

Yes, completely free. No hidden fees, no premium tiers, and no sign-up required. The tool is ad-supported so it can remain free for everyone.

What data is included for each element?

Each of the 118 elements includes atomic mass, electron configuration, electronegativity, atomic radius, ionization energy, melting/boiling points, density, crystal structure, isotope data, discovery history, and real-world uses.

How does the temperature slider work?

Drag the slider from 0K to 6000K and watch elements change state in real-time. Elements are color-coded as solid, liquid, or gas based on their melting and boiling points at the selected temperature.

What is the property heatmap mode?

Select a property like electronegativity, atomic radius, or ionization energy and the entire table becomes a color gradient, letting you instantly visualize periodic trends across all elements.

How does the molar mass calculator work?

Type any chemical formula (e.g., H₂SO₄, C₆H₁₂O₆, Ca(OH)₂) and get an instant molar mass calculation with a breakdown showing each element's contribution. Supports parentheses and nested groups.

Can I compare elements side by side?

Yes. Select 2 to 4 elements to see a side-by-side comparison with bar charts for key properties including atomic mass, electronegativity, density, melting point, and ionization energy.

Can I export element data?

Yes. Export the full element dataset or your filtered selection as CSV or JSON. You can also download a print-friendly PDF of the periodic table or a PNG screenshot of your current view.

Does this work on mobile devices?

The tool is optimized for desktop use (1024px+ screens) for the best experience with the full periodic table layout. It works on tablets and larger phones but desktop provides the richest interaction.

Is this a good alternative to paid periodic table apps?

Yes. This tool replaces paid apps like Merck PTE ($2.99) and Periodic Table Pro (subscription) with a free, browser-based alternative that includes interactive features like temperature visualization and property heatmaps.

Free Interactive Periodic Table

Explore all 118 elements with real-time temperature phase changes, property heatmaps, and a molar mass calculator — a free alternative to Merck PTE and Periodic Table Pro. No sign-up required.

Explore all 118 elements with property heatmaps, temperature-driven phase-change animations, electron configuration breakdowns, and a built-in molar mass calculator that parses chemical formulas like H2SO4 or Ca(OH)2. Filter by category — alkali metal, halogen, lanthanide — and export element data as CSV or JSON. A free interactive reference for chemistry students, science teachers, and anyone who needs a cleaner Ptable or Merck PTE replacement.

Built and maintained by James Nicolaus

Temperature Phase Visualization

Drag a slider from 0K to 6000K and watch all 118 elements change state in real-time. See which elements are solid, liquid, or gas at any temperature.

Property Heatmaps

Visualize periodic trends instantly. Select electronegativity, atomic radius, ionization energy, or density to see the entire table as a color gradient.

Molar Mass Calculator

Type any chemical formula and get instant molar mass with a full element-by-element breakdown. Supports complex formulas with parentheses.

Element Comparison & Export

Compare 2–4 elements side by side with bar charts. Export data as CSV, JSON, or PDF. Every property for all 118 elements, completely free.

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.

Working through a chemistry or physics problem? Convert between mass, volume, energy, and temperature units with the free unit converter, or plot reaction rates and equations with the free graphing calculator.

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
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
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
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
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
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 Ptable & Merck PTE Alternative

Feature	Free Tool Shed	Merck PTE ($2.99)	PTable.com
Price	Free	$2.99	Free (ads)
All 118 elements	Yes	Yes	Yes
Temperature slider	0–6000 K	No	Limited
Property heatmaps	8 properties	No	Some
Molar mass calculator	Yes	No	Yes
Electron config builder	Interactive	No	No
Element comparison	Up to 4	Yes	No
Data export (CSV/JSON/PDF)	Yes	No	No
Dark mode	Yes	No	No
Sign-up required	No	App Store	No
Works offline	Yes (cached)	Yes	No
Bohr model visualization	Animated SVG	Static	No
Open in browser	Yes	iOS/Android only	Yes

Tips, Mistakes & Takeaways

Tips

→Use the temperature slider to watch phase transitions — melting, boiling, and sublimation are color-coded per element.
→Filter by category (halogen, noble gas, lanthanide) before exporting — the CSV/JSON reflects the active filter.
→Feed the molar mass calculator parenthesized formulas like Ca(OH)2 — it parses nested groups, not just flat chains.
→Switch between heatmap and absolute views to see periodic trends (electronegativity, atomic radius) visually.

Common Mistakes

!Reading heatmap shading as exact — it's tuned for visual trend spotting, not precise numerical comparison.
!Comparing exported values across property views without noting the unit — some properties have multiple conventions.
!Expecting compounds, reactions, or thermochemistry — this is an element-by-element reference, not a chemistry engine.

Key Takeaways

✓All element data ships with the page — no API calls, no rate limits, works offline once cached.
✓Built for chemistry students, teachers, and casual reference — not for research-grade citations.
✓Export to CSV or JSON for homework, spreadsheets, or downstream tools.

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.