Scientific & Mathematical Constants
A comprehensive database of universal constants across mathematics, physics, and astronomy. Use these values for high-precision scientific calculations.
ℇ Mathematical Constants
Pi
Dimensionless π
3.14159265358979323846 Ratio of a circle's circumference to its diameter.
Euler's Number
Dimensionless e
2.71828182845904523536 Base of the natural logarithm.
Golden Ratio
Dimensionless φ
1.61803398874989484820 Mathematical constant found in nature and art.
⚛️ Physical & Science Constants
Speed of Light
m/s c
299,792,458 Universal physical constant in vacuum.
Planck Constant
J⋅s h
6.62607015 × 10⁻³⁴ Fundamental constant in quantum mechanics.
Gravitational Constant
m³⋅kg⁻¹⋅s⁻² G
6.67430 × 10⁻¹¹ Empirical constant in Newtonian law of gravitation.
🔭 Astronomical Constants
Astronomical Unit
m AU
149,597,870,700 Mean distance between the Earth and the Sun.
Light Year
m ly
9,460,730,472,580,800 Distance light travels in a vacuum in one Julian year.
🌍 Earth & Geophysics Constants
Standard Gravity
m/s² g
9.80665 Nominal gravitational acceleration of an object near Earth's surface.