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The INTERNET Database of Periodic Tables

There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D.

Use the drop menus below to search & select from the more than 1300 Period Tables in the database: 

  Text Search:       

The four best data rich periodic tables on the web: Wikipedia is stuffed full of detailed periodic table data and information; Mark Winter's WebElements has been on the web since 1993 and it is the most data complete PT website out there; Theo Gray's Photographic Periodic Table is the most beautiful periodic table on the web (full of interesting photographs, element curiosities and stories); Michael Dayah's Ptable has lots of cool dynamic interface features:

1993   WebElements: The Periodic Table on The Web
2007   Gray's Photographic Periodic Table
1997   Ptable
2001   Wikipedia Periodic Table

Year:  1993 PT id = 114

WebElements: The Periodic Table on The Web

Mark Winter's WebElements was started in 1993 when it was one of the first websites on the internet.

Mark Leach's Chemogenesis web book uses the WebElements periodic table as its master data source, and it does not attempt to duplicate it.

Abundance of elements (Earth's crust)
Abundance of elements (oceans)
Abundance of elements (sun)
Abundance of elements (Universe)
Abundance of elements (in human body)
Accurate mass of the isotopes
Atomic number
Atomic weight
Biological role
Block in periodic table
Boiling point
Bond enthalpy (diatomics)
Bond length in element
Colour (color)
Covalent radius
Crystal structure
Electrical resistivity

Electronic configuration
Element bond length
Enthalpy of atomization
Enthalpy of fusion
Enthalpy of vaporization
Examples of compounds
Group name numbers
Health hazards
History of the element
Ionic radius
Ionization energy
Isotope data
Key data
Meaning of name
Melting point
Molar volume
Names and symbols
Nuclear data
Origin of name

Oxidation states in compounds
Period in table
Properties of some compounds
Radius (atomic)
Radius (covalent)
Radius (ionic)
Radius (van der Waals)
Radius metallic (12)
Radioactive isotopes
Resistivity (electrical)
Shell structure
Standard atomic weights
Standard state
Structure of element
Thermal conductivity
Van der Waals radius
X-ray crystal structure

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Year:  2007 PT id = 244

Gray's Photographic Periodic Table

Theodore Gray's Periodic Table.Com is a live version of what is generally regarded as the most beautiful periodic table to be developed so far. It is a treasure trove of pictures, videos and stories. Explore!

Theo is an enthusiast and a collector, and he uses the power of Mathematica (he is a co-founder of Wolfram Research) to drive his astonishing website. It is Theo's aim to be the number one periodic table resource on the web.

Mark Leach, the database curator writes:

"I find Theo's website and approach to be complementary to the more academic WebElements."

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Year:  1997 PT id = 582


Ptable is an excellent, data filled, dynamic periodic table with an intuitive and flexible interface, available in 50 languages:

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Year:  2001 PT id = 1025

Wikipedia Periodic Table

The Wikipedia Periodic Table pages are astonishing, giving hyper-linked data about:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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