Molecular Weight Calculator
Calculate the molecular weight of small molecules by elemental formula or peptides by one-letter amino acid sequence.
Enter standard chemical notation (e.g., C6H12O6 for glucose)
Amino Acid Reference
A
89.09
R
174.2
N
132.12
D
133.1
C
121.16
E
147.13
Q
146.15
G
75.03
H
155.16
I
131.17
L
131.17
K
146.19
M
149.21
F
165.19
P
115.13
S
105.09
T
119.12
W
204.23
Y
181.19
V
117.15