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Mathematics and Physics Constants

Write the approximate values with 6 significant figures, the exponent, and the corresponding unit (SI or the most used).
Units are arranged in descending order of powers, and alphabetically if the powers are equal.
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Mounours
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Last updated: December 4, 2025
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First submittedDecember 4, 2025
Times taken92
Average score18.1%
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Name
Symbol
Value
Exponent
Unit (SI)
Pi
π
3.14159
 
 
Tau
τ
6.28318
 
 
Euler's Number
e
2.71828
 
 
Euler-Mascheroni's Constant
γ
5.77216
-1
 
Natural Logarithm of 2
ln(2)
6.93147
-1
 
Square Root of 2
√2
1.41421
 
 
Square Root of Pi
√π
1.77245
 
 
Speed of Light in a Vacuum
c
2.99792
8
m*s-1
Gravitational Constant
G
6.6743
-11
m3*kg-1*s-2
Planck Constant
h
6.62607
-34
m2*kg*s-1
Reduced Planck Constant
ħ
1.05457
-34
m2*kg*s-1
Boltzmann Constant
kB
1.38065
-23
m2*kg*K-1*s-2
Electron Charge
e
1.60218
-19
A*s
Vacuum Permittivity
ε0
8.85419
-12
s4*A2*kg-1*m-3
Vacuum Permeability
μ0
1.25664
-6
kg*m*A-2*s-2
Vacuum Impedance
Z0
3.7673
2
m2*kg*A-2*s-3
Faraday Constant
F
9.64853
4
A*s*mol-1
Frequency of the Transition of Cesium
f Cs
9.19263
5
s-1
Luminous Efficacy
Kcd
6.83
2
cd*sr*W-1
Coulomb Constant
k
8.98755
9
m3*kg*A-2*s-4
Electron Mass
me
9.10938
-31
kg
Proton Mass
mp
1.67262
-27
kg
Neutron Mass
mn
1.67493
-27
kg
Electron Radius
re
2.81794
-15
m
Bohr Radius
a0
5.29178
-11
m
Ideal Gas Constant
R
8.31446
 
m2*kg*K-1*mol-1*s-2
Avogadro Constant
NA
6.02214
23
mol-1
Molar Volume of Ideal Gas
Vm
2.2414
1
m3*mol-1
Earth Gravity
g
9.80665
 
m*s-2
Earth Mass
M⊕
5.97237
24
kg
Earth Radius
R⊕
6.371
6
m
Earth Circumference
C⊕
4.00302
7
m
Sun Mass
M☉
1.9885
30
kg
Earth-Moon Distance
d
3.84400
8
m
Moon Mass
ML
7.342
22
kg
Planck Length
lp
1.61626
-35
m
Planck Temperature
Tp
1.41681
32
K
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