Periodic table
Searchable periodic table with element properties.
Runs in this tab. The file stays here.
118 of 118 entries
- 1H
Hydrogen
1.008 u · nonmetal
- 2He
Helium
4.003 u · noble gas
- 3Li
Lithium
6.94 u · alkali metal
- 4Be
Beryllium
9.012 u · alkaline earth
- 5B
Boron
10.81 u · metalloid
- 6C
Carbon
12.011 u · nonmetal
- 7N
Nitrogen
14.007 u · nonmetal
- 8O
Oxygen
15.999 u · nonmetal
- 9F
Fluorine
18.998 u · halogen
- 10Ne
Neon
20.18 u · noble gas
- 11Na
Sodium
22.99 u · alkali metal
- 12Mg
Magnesium
24.305 u · alkaline earth
- 13Al
Aluminium
26.982 u · post-transition
- 14Si
Silicon
28.085 u · metalloid
- 15P
Phosphorus
30.974 u · nonmetal
- 16S
Sulfur
32.06 u · nonmetal
- 17Cl
Chlorine
35.45 u · halogen
- 18Ar
Argon
39.948 u · noble gas
- 19K
Potassium
39.098 u · alkali metal
- 20Ca
Calcium
40.078 u · alkaline earth
- 21Sc
Scandium
44.956 u · transition metal
- 22Ti
Titanium
47.867 u · transition metal
- 23V
Vanadium
50.942 u · transition metal
- 24Cr
Chromium
51.996 u · transition metal
- 25Mn
Manganese
54.938 u · transition metal
- 26Fe
Iron
55.845 u · transition metal
- 27Co
Cobalt
58.933 u · transition metal
- 28Ni
Nickel
58.693 u · transition metal
- 29Cu
Copper
63.546 u · transition metal
- 30Zn
Zinc
65.38 u · transition metal
- 31Ga
Gallium
69.723 u · post-transition
- 32Ge
Germanium
72.63 u · metalloid
- 33As
Arsenic
74.922 u · metalloid
- 34Se
Selenium
78.971 u · nonmetal
- 35Br
Bromine
79.904 u · halogen
- 36Kr
Krypton
83.798 u · noble gas
- 37Rb
Rubidium
85.468 u · alkali metal
- 38Sr
Strontium
87.62 u · alkaline earth
- 39Y
Yttrium
88.906 u · transition metal
- 40Zr
Zirconium
91.224 u · transition metal
- 41Nb
Niobium
92.906 u · transition metal
- 42Mo
Molybdenum
95.95 u · transition metal
- 43Tc
Technetium
98 u · transition metal
- 44Ru
Ruthenium
101.07 u · transition metal
- 45Rh
Rhodium
102.91 u · transition metal
- 46Pd
Palladium
106.42 u · transition metal
- 47Ag
Silver
107.87 u · transition metal
- 48Cd
Cadmium
112.41 u · transition metal
- 49In
Indium
114.82 u · post-transition
- 50Sn
Tin
118.71 u · post-transition
- 51Sb
Antimony
121.76 u · metalloid
- 52Te
Tellurium
127.6 u · metalloid
- 53I
Iodine
126.9 u · halogen
- 54Xe
Xenon
131.29 u · noble gas
- 55Cs
Caesium
132.91 u · alkali metal
- 56Ba
Barium
137.33 u · alkaline earth
- 57La
Lanthanum
138.91 u · lanthanide
- 58Ce
Cerium
140.12 u · lanthanide
- 59Pr
Praseodymium
140.91 u · lanthanide
- 60Nd
Neodymium
144.24 u · lanthanide
- 61Pm
Promethium
145 u · lanthanide
- 62Sm
Samarium
150.36 u · lanthanide
- 63Eu
Europium
151.96 u · lanthanide
- 64Gd
Gadolinium
157.25 u · lanthanide
- 65Tb
Terbium
158.93 u · lanthanide
- 66Dy
Dysprosium
162.5 u · lanthanide
- 67Ho
Holmium
164.93 u · lanthanide
- 68Er
Erbium
167.26 u · lanthanide
- 69Tm
Thulium
168.93 u · lanthanide
- 70Yb
Ytterbium
173.05 u · lanthanide
- 71Lu
Lutetium
174.97 u · lanthanide
- 72Hf
Hafnium
178.49 u · transition metal
- 73Ta
Tantalum
180.95 u · transition metal
- 74W
Tungsten
183.84 u · transition metal
- 75Re
Rhenium
186.21 u · transition metal
- 76Os
Osmium
190.23 u · transition metal
- 77Ir
Iridium
192.22 u · transition metal
- 78Pt
Platinum
195.08 u · transition metal
- 79Au
Gold
196.97 u · transition metal
- 80Hg
Mercury
200.59 u · transition metal
- 81Tl
Thallium
204.38 u · post-transition
- 82Pb
Lead
207.2 u · post-transition
- 83Bi
Bismuth
208.98 u · post-transition
- 84Po
Polonium
209 u · post-transition
- 85At
Astatine
210 u · halogen
- 86Rn
Radon
222 u · noble gas
- 87Fr
Francium
223 u · alkali metal
- 88Ra
Radium
226 u · alkaline earth
- 89Ac
Actinium
227 u · actinide
- 90Th
Thorium
232.04 u · actinide
- 91Pa
Protactinium
231.04 u · actinide
- 92U
Uranium
238.03 u · actinide
- 93Np
Neptunium
237 u · actinide
- 94Pu
Plutonium
244 u · actinide
- 95Am
Americium
243 u · actinide
- 96Cm
Curium
247 u · actinide
- 97Bk
Berkelium
247 u · actinide
- 98Cf
Californium
251 u · actinide
- 99Es
Einsteinium
252 u · actinide
- 100Fm
Fermium
257 u · actinide
- 101Md
Mendelevium
258 u · actinide
- 102No
Nobelium
259 u · actinide
- 103Lr
Lawrencium
266 u · actinide
- 104Rf
Rutherfordium
267 u · transition metal
- 105Db
Dubnium
268 u · transition metal
- 106Sg
Seaborgium
269 u · transition metal
- 107Bh
Bohrium
270 u · transition metal
- 108Hs
Hassium
277 u · transition metal
- 109Mt
Meitnerium
278 u · transition metal
- 110Ds
Darmstadtium
281 u · transition metal
- 111Rg
Roentgenium
282 u · transition metal
- 112Cn
Copernicium
285 u · transition metal
- 113Nh
Nihonium
286 u · post-transition
- 114Fl
Flerovium
289 u · post-transition
- 115Mc
Moscovium
290 u · post-transition
- 116Lv
Livermorium
293 u · post-transition
- 117Ts
Tennessine
294 u · halogen
- 118Og
Oganesson
294 u · noble gas
This runs in your browser. Nothing is uploaded.
About Periodic table
Look up all 118 elements by name, symbol, atomic number, or category. It's a searchable list with the mass and category of each, and it works offline once the page has loaded.
Type into the search box and the list narrows as you go. It matches on the symbol, the name, the atomic number, and the category, so "Fe", "iron", "26" and "halogen" all do something useful. Each row shows the atomic number and symbol in a small tile, the element's name, its atomic mass in unified atomic mass units, and its category. A counter above the list tells you how many of the 118 matched.
What it isn't is a chart. There's no 18-column grid showing groups and periods, no click-to-open detail panel, and no category filter or colour coding. Matching is by substring, so a search for "1" returns every element whose number contains a 1, and a search for "metal" returns several different categories at once. If you need the layout of the table, a printed one on the classroom wall does that job better.
The data is a compact set bundled with the page, so nothing is looked up. Masses are rounded to three decimal places or so, which is fine for homework and stoichiometry practice. Check a primary source (IUPAC, for instance) when you need more digits or uncertainty ranges. For the heaviest synthetic elements, the figure is the mass number of the most stable known isotope, not a measured average, and the category label for those elements is a best guess. Spellings follow British practice, so aluminium rather than aluminum.
How to use Periodic table
- 1Type a symbol, a name, an atomic number, or a category into the search box.
- 2Read the number, mass, and category on each matching row.
- 3Clear the box to see all 118 elements again.
What it won't do
- A searchable list, not a grid: no groups, periods, colour coding, or detail panel.
- Mass, name, symbol, number, and category only; substring search.
- Rounded values for study, not for research.
Common questions
How precise are the atomic masses?
They're rounded for study use, usually to three decimal places. For research or for conventional values with ranges, go to a primary source such as IUPAC.
Does it show groups, periods, or electron configurations?
No. Each entry has only the atomic number, symbol, name, mass, and category. The list has no grid layout, groups, periods, or electron data.
Why does searching for a number return so many elements?
Matching is by substring, not exact value. "2" finds 2, 12, 20 to 29, and so on. Type the full number, or search by symbol or name, to narrow it down.
Are the superheavy elements reliable?
They're included for completeness, but their masses are mass numbers of the longest-lived isotope, not standard atomic weights, and a few category labels are predictions from chemistry that hasn't been observed directly.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation