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Vector Operations Calculator

Easily perform fundamental vector operations like addition, subtraction, and the dot product for 2D and 3D vectors. Perfect for students tackling linear algebra or physics problems.

Enter the X-component of Vector A

Enter the Y-component of Vector A

Enter the Z-component of Vector A (optional, leave blank for 2D)

Enter the X-component of Vector B

Enter the Y-component of Vector B

Enter the Z-component of Vector B (optional, leave blank for 2D)

How it works

Easily perform fundamental vector operations like addition, subtraction, and the dot product for 2D and 3D vectors. Perfect for students tackling linear algebra or physics problems.


The Formula
Vector Addition: A + B = (Ax + Bx, Ay + By, Az + Bz)
Vector Subtraction: A - B = (Ax - Bx, Ay - By, Az - Bz)
Dot Product: A · B = (Ax * Bx) + (Ay * By) + (Az * Bz)

Worked Example
  1. Example: Vector A = (2, 3, 1), Vector B = (4, -1, 5)

    Let's say you have Vector A with components (2, 3, 1) and Vector B with components (4, -1, 5). 1. Vector Addition (A + B): (2+4, 3+(-1), 1+5) = (6, 2, 6) 2. Vector Subtraction (A - B): (2-4, 3-(-1), 1-5) = (-2, 4, -4) 3. Dot Product (A · B): (2*4) + (3*-1) + (1*5) = 8 - 3 + 5 = 10 Our calculator will show you these results instantly.


Tips, Assumptions & Limitations
  • For 2D vectors, simply leave the Z-component fields blank or enter 0.
  • Ensure all components are entered as numbers; decimals and negative values are supported.
  • The dot product results in a scalar (a single number), not another vector.
FAQ

In mathematics and physics, a vector is a quantity that has both magnitude (size) and direction. It's often represented as an arrow or as a set of components (like x, y, z coordinates) in a coordinate system.

Vector addition combines two vectors to find a resultant vector, often thought of as following one vector then the other. Vector subtraction finds the difference between two vectors, essentially adding the negative of the second vector to the first. Both operations are performed component-wise.

The dot product is an algebraic operation that takes two vectors and returns a single number (a scalar). It's calculated by multiplying corresponding components of the two vectors and then summing those products. The dot product is useful for finding the angle between two vectors or determining if they are perpendicular.

Yes! For 2D vectors, simply leave the Z-component fields blank or enter 0. The calculator will automatically treat them as zero and perform the operations in two dimensions.

Companion article

Vector Operations Calculator: Add, Subtract, and Find Dot Products

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