About the Gravitational Force Calculator
Newton's law of universal gravitation: F = Gmโmโ/rยฒ.
What it is
The Gravitational Force Calculator applies Newton's law of universal gravitation to solve for force, either mass, or the distance between two masses, given the other three quantities. G = 6.674ร10โปยนยน Nยทmยฒ/kgยฒ is used throughout, and inputs/outputs support scientific notation to handle the very large and very small numbers common in gravity problems.
Features
Solve for F, mโ, mโ, or r
Choose the unknown and enter the other three quantities.
Astronomical presets
Auto-fill mass values for Earth, the Moon, the Sun, Mars, and Jupiter.
Scientific notation
Handles astronomically large and vanishingly small numbers cleanly.
Step-by-step working
Shows the formula and substitution, including the value of G.