A vector is a quantity with both size and direction — the wind pushing your plane off course, the two forces pulling on a stuck bolt, the velocity of a boat crossing a river current. Adding vectors means combining those pushes into a single net effect, and the beautiful part is how mechanical it is: add the x-components together, add the y-components together, and you are done. The vectors (3, 4) and (1, 2) combine into the resultant (4, 6). No angles, no trigonometry — that comes later when you need the resultant's length and heading. This calculator does the component bookkeeping: enter the first vector in Vector 1 X and Vector 1 Y, the second in Vector 2 X and Vector 2 Y, and read the Resultant X and Resultant Y. Physics students use it for force diagrams, game developers for movement math, and navigators for wind corrections. Picture it tip-to-tail: place the second vector's tail at the first vector's tip, and the resultant is the arrow from the start to the finish.

With the pre-filled defaults — Vector 1 X 3, Vector 1 Y 4, Vector 2 X 1, Vector 2 Y 2 — the Adding Vectors Calculator returns Resultant X 4.0000, Resultant Y 6.0000. Change any input and those results update instantly, so you can see exactly how each number you enter moves the answer.