About this tool
The Projectile Motion Calculator is a free, in-browser physics tool that takes an initial speed, launch angle, launch height, and gravitational acceleration, then computes the range, maximum height, time of flight, the horizontal and vertical velocity components, and the impact speed. A small SVG plot sketches the trajectory so you can see the arc.
The calculation runs entirely locally in your browser with no data leaving your device. It uses the standard drag-free kinematic equations, resolving the launch velocity into components vx = v·cosθ and vy = v·sinθ and accounting for a non-zero launch height in the time-of-flight and impact-speed formulas.
Speed is in metres per second (m/s), angle in degrees measured from the horizontal, height in metres (m), and gravity in m/s² with a default of 9.80665 (standard gravity) that you can edit for other bodies. Air resistance is ignored, so results describe idealised projectile motion in a vacuum.