Gram Formula Mass Calculator

Calculate the gram formula mass of any compound by clicking on the elements on our interactive periodic table

Formula will Appear Here
0g/mol
1
H
2
He
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
55
Cs
56
Ba
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
87
Fr
88
Ra
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
119
Uue

Common Polyatomic Ions

Hydronium H₃O⁺
Carbonate CO₃²⁻
Hydrogen Carbonate HCO₃⁻
Thiosulfate S₂O₃²⁻
Mercury (I) Hg²⁺
Oxalate C₂O₄²⁻
Hypochlorite ClO⁻
Chlorite ClO₂⁻
Ammonium NH₄⁺
Chlorate ClO₃⁻
Perchlorate ClO₄⁻
Chromate CrO₄²⁻
Acetate CH₃COO⁻
Dichromate Cr₂O₇²⁻
Permanganate MnO₄⁻
Nitrite NO₂⁻
Cyanide CN⁻
Peroxide O₂²⁻
Hydroxide OH⁻
Phosphate PO₄³⁻
Thiocyanate SCN⁻
Sulfite SO₃²⁻
Sulfate SO₄²⁻
Hydrogen Sulfate HSO₃⁻
Nitrate NO₃⁻