Projectile Max Height Calculator

About this calculator

For projectile motion under constant gravity, the maximum height above the launch point is reached when the vertical velocity component drops to zero, giving h = (v·sin θ)² ÷ (2g), where v is launch speed, θ is the launch angle from horizontal, and g is gravitational acceleration. Adding a nonzero starting height simply shifts the result: total peak height = initial height + (v·sin θ)² ÷ (2g).

This calculator takes launch velocity, angle, gravity, and initial height and returns the projectile's maximum height above the ground. Physics students use it to check kinematics homework on cannonballs, thrown balls, or launched rockets, and ballistics hobbyists and model rocketry enthusiasts use it to predict apogee for a given launch speed and angle before a real test.