Speed of light in a vacuum (c)
3.00 × 108 m/s
Elementary charge (e)
1.60 × 10-19 C
Electron rest mass (me )
9.11 × 10-31 kg
Proton rest mass (mp )
1.67 × 10-27 kg
Neutron rest mass (mn )
1.67 × 10-27 kg
Permittivity constant (epsilon0 )
8.85 × 10-12 F/m
Permeability constant (mu0 )
1.26 × 10-6 H/m
Planck's constant (h)
6.63 × 10-34 J×s
Universal gas constant (R)
8.31 J / mol×K
Avogadro's Number (NA )
6.02 × 1023 mol-1
Boltzmann's constant (k)
1.38 × 10-23 J/K
Faraday's constant (F)
9.65 × 104 C/mol
Rydberg constant (R)
1.10 × 107 m-1
Gravitational constant (G)
6.67 × 10-11 m3/s2kg
Acceleration due to gravity at Earth's surface (g)
9.81 m/s2
Bohr radius (a0 )
5.29 × 10-11 m

(friendly advice: in the interest of making information more accessible, don't add write-ups here unless you have more than 3 or 4 constants you think should be added... otherwise, just /msg me. thanks)

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