List of constants
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Mathematical
e (Euler's number) = 2.71828183
π = 3.14159265
Golden ratio = 1.61803399

Physical

c (speed of light) = 299792458 m s-1
symbol (Planck's constant) = 6.626x10-34 m2 kg s-1
symbol (Dirac's constant) = 1.05457163-34 J s
e (electron charge) = 1.60217649x10-19 C
ε0 (vacuum permittivity) = 8.854188x10-12 F m-1
μ0 (magnetic constant) = 1.256637x10-6 N A-2
mp (mass of a proton) = 1.67262164x10-27 kg

Chemical

Na (Avogadro constant) = 6.0221415x1023
Da or AMU = 1.66053886x10-27 kg
R (Gas constant) = 8.314472 J K-1 mol-1
k (Boltzmann constant) = 1.3806505x10-23 J K-1
F (Faraday constant) = 96485.3383 C mol-1

Standard quantities

g (gravity) = 9.80665 m s-2
Atmosphere (pressure) = 101325 Pa