1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1
H
Hydrogen
1.008

Periodic Table

Select elements and see the molar mass of the compound

Chemical formula (Hill notation)

Molar mass (g/mol)

2
He
Helium
4.002602
3
Li
Lithium
6.94
4
Be
Beryllium
9.0121831
5
B
Boron
10.81
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998403163
10
Ne
Neon
20.1797
11
Na
Sodium
22.98976928
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.9815385
14
Si
Silicon
28.085
15
P
Phosphorus
30.973761998
16
S
Sulfur
32.06
17
Cl
Chlorine
35.45
18
Ar
Argon
39.948
19
K
Potassium
39.0983
20
Ca
Calcium
40.078
21
Sc
Scandium
44.955908
22
Ti
Titanium
47.867
23
V
Vanadium
50.9415
24
Cr
Chromium
51.9961
25
Mn
Manganese
54.938044
26
Fe
Iron
55.845
27
Co
Cobalt
58.933194
28
Ni
Nickel
58.6934
29
Cu
Copper
63.546
30
Zn
Zinc
65.38
31
Ga
Gallium
69.723
32
Ge
Germanium
72.630
33
As
Arsenic
74.921595
34
Se
Selenium
78.971
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
37
Rb
Rubidium
85.4678
38
Sr
Strontium
87.62
39
Y
Yttrium
88.90584
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.90637
42
Mo
Molybdenum
95.95
43
Tc
Technetium
[97]
44
Ru
Ruthenium
101.07
45
Rh
Rhodium
102.90550
46
Pd
Palladium
106.42
47
Ag
Silver
107.8682
48
Cd
Cadmium
112.414
49
In
Indium
114.818
50
Sn
Tin
118.710
51
Sb
Antimony
121.760
52
Te
Tellurium
127.60
53
I
Iodine
126.90447
54
Xe
Xenon
131.293
55
Cs
Caesium
132.90545196
56
Ba
Barium
137.327
57
La
Lanthanum
138.90547
72
Hf
Hafnium
178.49
73
Ta
Tantalum
180.94788
74
W
Tungsten
183.84
75
Re
Rhenium
186.207
76
Os
Osmium
190.23
77
Ir
Iridium
192.217
78
Pt
Platinum
195.084
79
Au
Gold
196.966569
80
Hg
Mercury
200.592
81
Tl
Thallium
204.38
82
Pb
Lead
207.2
83
Bi
Bismuth
208.98040
84
Po
Polonium
[209]
85
At
Astatine
[210]
86
Rn
Radon
[222]
87
Fr
Francium
[223]
88
Ra
Radium
[226]
89
Ac
Actinium
[227]
104
Rf
Rutherfordium
[267]
105
Db
Dubnium
[270]
106
Sg
Seaborgium
[271]
107
Bh
Bohrium
[270]
108
Hs
Hassium
[277]
109
Mt
Meitnerium
[276]
110
Ds
Darmstadtium
[281]
111
Rg
Roentgenium
[282]
112
Cn
Copernicium
[285]
113
Nh
Nihonium
[285]
114
Fl
Flerovium
[289]
115
Mc
Moscovium
[289]
116
Lv
Livermorium
[293]
117
Ts
Tennessine
[294]
118
Og
Oganesson
[294]
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.90766
60
Nd
Neodymium
144.242
61
Pm
Promethium
[145]
62
Sm
Samarium
150.36
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.25
65
Tb
Terbium
158.92535
66
Dy
Dysprosium
162.500
67
Ho
Holmium
164.93033
68
Er
Erbium
167.259
69
Tm
Thulium
168.93422
70
Yb
Ytterbium
173.054
71
Lu
Lutetium
174.9668
90
Th
Thorium
232.0377
91
Pa
Protactinium
231.03588
92
U
Uranium
238.02891
93
Np
Neptunium
[237]
94
Pu
Plutonium
[244]
95
Am
Americium
[243]
96
Cm
Curium
[247]
97
Bk
Berkelium
[247]
98
Cf
Californium
[251]
99
Es
Einsteinium
[252]
100
Fm
Fermium
[257]
101
Md
Mendelevium
[258]
102
No
Nobelium
[259]
103
Lr
Lawrencium
[262]

Latest Updates

We have a new button m=nM.

4 March 2018

About

Use this visual tool for calculating molar mass for any chemical formula. Options for hiding the symbol or name of the elements provide a handy learning aid for memorizing the periodic table. Please note that the chemical formula is not limited to the known chemical compounds.

This periodic table is created by Dr Kaisa Helttunen and Heikki Kainulainen. Source code is available at GitHub.

iOS

We have also created a Periodic Table app for iOS.

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References

Atomic weights are according to IUPAC © 2013 (Pure Appl. Chem., Vol. 85, pp. 1047-1078, 2013).

Revised values for aluminium, arsenic, beryllium, cadmium, caesium, cobalt, fluorine, gold, holmium, manganese, molybdenum, niobium, phosphorus, praseodymium, scandium, selenium, thorium, thulium and yttrium are taken from IUPAC website.

Conventional atomic weights are used for boron, bromine, carbon, chlorine, hydrogen, lithium, magnesium, nitrogen, oxygen, silicon, sulfur and thallium.

For radioactive elements with no stable isotopes, mass number of the most stable isotope is shown in brackets.