Sir Isaac Newton and Gottfried Wilhelm Leibniz are both credited with independently inventing calculus in the late 17th century. While they developed their approaches to calculus separately, their work ultimately converged on many of the same fundamental concepts.
Newton's calculus was primarily focused on the study of motion and rates of change, while Leibniz's approach was more abstract and symbolic. Both mathematicians made significant contributions to the development of calculus and its applications in various fields of science.