Atomic Mass of all Elements (Chart + Rounded values)

Atomic mass of all elements (along with the rounded off values) is mentioned in the chart below.

Atomic Number	Element	Atomic Mass (u)	Atomic mass (u)(Rounded off)
1	Atomic mass of Hydrogen (H)	1.008	1
2	Atomic mass of Helium (He)	4.002	4
3	Atomic mass of Lithium (Li)	6.94	7
4	Atomic mass of Beryllium (Be)	9.012	9
5	Atomic mass of Boron (B)	10.81	11
6	Atomic mass of Carbon (C)	12.011	12
7	Atomic mass of Nitrogen (N)	14.007	14
8	Atomic mass of Oxygen (O)	15.999	16
9	Atomic mass of Fluorine (F)	18.998	19
10	Atomic mass of Neon (Ne)	20.180	20
11	Atomic mass of Sodium (Na)	22.990	23
12	Atomic mass of Magnesium (Mg)	24.305	24
13	Atomic mass of Aluminum (Al)	26.982	27
14	Atomic mass of Silicon (Si)	28.085	28
15	Atomic mass of Phosphorus (P)	30.974	31
16	Atomic mass of Sulfur (S)	32.06	32
17	Atomic mass of Chlorine (Cl)	35.45	35
18	Atomic mass of Argon (Ar)	39.95	40
19	Atomic mass of Potassium (K)	39.098	39
20	Atomic mass of Calcium (Ca)	40.078	40
21	Atomic mass of Scandium (Sc)	44.956	45
22	Atomic mass of Titanium (Ti)	47.867	48
23	Atomic mass of Vanadium (V)	50.942	51
24	Atomic mass of Chromium (Cr)	51.996	52
25	Atomic mass of Manganese (Mn)	54.938	55
26	Atomic mass of Iron (Fe)	55.845	56
27	Atomic mass of Cobalt (Co)	58.933	59
28	Atomic mass of Nickel (Ni)	58.693	59
29	Atomic mass of Copper (Cu)	63.546	64
30	Atomic mass of Zinc (Zn)	65.38	65
31	Atomic mass of Gallium (Ga)	69.723	70
32	Atomic mass of Germanium (Ge)	72.630	73
33	Atomic mass of Arsenic (As)	74.922	75
34	Atomic mass of Selenium (Se)	78.971	79
35	Atomic mass of Bromine (Br)	79.904	80
36	Atomic mass of Krypton (Kr)	83.798	84
37	Atomic mass of Rubidium (Rb)	85.468	85
38	Atomic mass of Strontium (Sr)	87.62	88
39	Atomic mass of Yttrium (Y)	88.906	89
40	Atomic mass of Zirconium (Zr)	91.224	91
41	Atomic mass of Niobium (Nb)	92.906	93
42	Atomic mass of Molybdenum (Mo)	95.95	96
43	Atomic mass of Technetium (Tc)	(98)	(98)
44	Atomic mass of Ruthenium (Ru)	101.07	101
45	Atomic mass of Rhodium (Rh)	102.91	103
46	Atomic mass of Palladium (Pd)	106.42	106
47	Atomic mass of Silver (Ag)	107.87	108
48	Atomic mass of Cadmium (Cd)	112.41	112
49	Atomic mass of Indium (In)	114.82	115
50	Atomic mass of Tin (Sn)	118.71	119
51	Atomic mass of Antimony (Sb)	121.76	122
52	Atomic mass of Tellurium (Te)	127.60	128
53	Atomic mass of Iodine (I)	126.90	127
54	Atomic mass of Xenon (Xe)	131.29	131
55	Atomic mass of Cesium (Cs)	132.91	133
56	Atomic mass of Barium (Ba)	137.33	137
57	Atomic mass of Lanthanum (La)	138.91	139
58	Atomic mass of Cerium (Ce)	140.12	140
59	Atomic mass of Praseodymium (Pr)	140.91	141
60	Atomic mass of Neodymium (Nd)	144.24	144
61	Atomic mass of Promethium (Pm)	145.00	145
62	Atomic mass of Samarium (Sm)	150.36	150
63	Atomic mass of Europium (Eu)	151.96	152
64	Atomic mass of Gadolinium (Gd)	157.25	157
65	Atomic mass of Terbium (Tb)	158.93	159
66	Atomic mass of Dysprosium (Dy)	162.50	163
67	Atomic mass of Holmium (Ho)	164.93	165
68	Atomic mass of Erbium (Er)	167.26	167
69	Atomic mass of Thulium (Tm)	168.93	169
70	Atomic mass of Ytterbium (Yb)	173.05	173
71	Atomic mass of Lutetium (Lu)	174.97	175
72	Atomic mass of Hafnium (Hf)	178.49	178
73	Atomic mass of Tantalum (Ta)	180.95	181
74	Atomic mass of Tungsten (W)	183.84	184
75	Atomic mass of Rhenium (Re)	75	75
76	Atomic mass of Osmium (Os)	190.23	190
77	Atomic mass of Iridium (Ir)	192.22	192
78	Atomic mass of Platinum (Pt)	195.08	195
79	Atomic mass of Gold (Au)	107.87	108
80	Atomic mass of Mercury (Hg)	200.59	201
81	Atomic mass of Thallium (Tl)	204.38	204
82	Atomic mass of Lead (Pb)	207.2	207
83	Atomic mass of Bismuth (Bi)	208.98	209
84	Atomic mass of Polonium (Po)	(209)	(209)
85	Atomic mass of Astatine (At)	(210)	(210)
86	Atomic mass of Radon (Rn)	(222)	(222)
87	Atomic mass of Francium (Fr)	(223)	(223)
88	Atomic mass of Radium (Ra)	(226)	(226)
89	Atomic mass of Actinium (Ac)	(227)	(227)
90	Atomic mass of Thorium (Th)	232.04	232
91	Atomic mass of Protactinium (Pa)	231.04	231
92	Atomic mass of Uranium (U)	238.03	238
93	Atomic mass of Neptunium (Np)	(237)	(237)
94	Atomic mass of Plutonium (Pu)	(244)	(244)
95	Atomic mass of Americium (Am)	(243)	(243)
96	Atomic mass of Curium (Cm)	(247)	(247)
97	Atomic mass of Berkelium (Bk)	(247)	(247)
98	Atomic mass of Californium (Cf)	(251)	(251)
99	Atomic mass of Einsteinium (Es)	(252)	(252)
100	Atomic mass of Fermium (Fm)	(257)	(257)
101	Atomic mass of Mendelevium (Md)	(258)	(258)
102	Atomic mass of Nobelium (No)	(259)	(259)
103	Atomic mass of Lawrencium (Lr)	(266)	(266)
104	Atomic mass of Rutherfordium (Rf)	(267)	(267)
105	Atomic mass of Dubnium (Db)	(268)	(268)
106	Atomic mass of Seaborgium (Sg)	(269)	(269)
107	Atomic mass of Bohrium (Bh)	(270)	(270)
108	Atomic mass of Hassium (Hs)	(277)	(277)
109	Atomic mass of Meitnerium (Mt)	(278)	(278)
110	Atomic mass of Darmstadtium (Ds)	(281)	(281)
111	Atomic mass of Roentgenium (Rg)	(282)	(282)
112	Atomic mass of Copernicium (Cn)	(285)	(285)
113	Atomic mass of Nihonium (Nh)	(286)	(286)
114	Atomic mass of Flerovium (Fl)	(289)	(289)
115	Atomic mass of Moscovium (Mc)	(290)	(290)
116	Atomic mass of Livermorium (Lv)	(293)	(293)
117	Atomic mass of Tennessine (Ts)	(294)	(294)
118	Atomic mass of Oganesson (Og)	(294)	(294)

Note:

• The Atomic masses are represented in the Atomic mass unit (u).
• The elements whose atomic masses are written in bracket ( ) are the synthetic elements and their atomic masses values represent the Atomic Mass of the most stable isotope.

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