The gravitational constant, also known as the universal gravitational constant or the Newton gravitational constant, denoted by the letter \(G\), is a physical constant involved in the calculation of the gravitational force between two objects that have mass.

The current accepted value of G, according to the CODATA Recommended Values of the Fundamental Physical Constants (2018), is:

$$G = 6.67430(15) \times 10^{-11} \ m^2 kg^{-2} s^{-2}$$

where the number in parentheses represents the standard uncertainty of the last two digits. This means that the true value of \(G\) lies within the interval of 6.67415 × 10^{-11} m^2 kg^{-2} s^{-2} and 6.67445 × 10^{-11} m^2 kg^{-2} s^{-2} with a probability of approximately 68%. To improve the precision of the measurements and refine the value of \(G\), ongoing experiments and research continue in the field of fundamental physics.