Kinematic Equations Calculator

This kinematic equations calculator solves problems of motion with constant acceleration using the SUVAT method, the workhorse of secondary and first-year physics. SUVAT takes its name from the five quantities it connects: s for displacement, u for the initial velocity, v for the final velocity, a for the acceleration and t for the time. Given any three of these, the equations of motion let you work out the other two, and that is exactly what this tool does. You enter the three values you know and leave the two you want to find blank, and the calculator applies the standard equations, v equals u plus a t, s equals u t plus half a t squared, v squared equals u squared plus two a s, and s equals half the sum of u and v times t, to fill in the rest. It is perfect for the classic problems of a car braking to a stop, a ball thrown upward, or an object accelerating from rest, and it saves you choosing which equation to use because it works that out for you. The one condition is that the acceleration must be constant over the motion, which covers free fall near the Earth and steady acceleration or braking, but not situations where the acceleration itself changes. Enter any three values to see the full solution straight away.

Use consistent SI units (m/s, m/s², s, m). Assumes constant acceleration. Estimate only.