These calculators can be used to generate data using **mass**, **radius** and **force**.

Calculate the **force** given two **mass**es and a **radius**.

F = GMm/r^{2}

Calculate the first **mass** given the second **mass**, **force** and **radius**.

M = Fr^{2}/Gm

Calculate the second **mass** given the first **mass**, **force** and **radius**.

m = Fr^{2}/GM

Calculate the **radius** given the **mass**es and **force**.

r = √[GMm/F]