# Vector Magnitude

In these lessons, we will learn how to find the magnitude of 2-dimensional vectors and 3-dimensional vectors.

Related Topics: More Lessons on Vectors

The length of a vector is called the **magnitude** or modulus of the vector.

** *** Example: *

Express each of the following vectors as a column vector and find its magnitude.

## Vectors in 2D

Vectors

Adding vectors geometrically, scalar multiplication, how to find the magnitude and direction angle of a vector.

Vectors : magnitude of a vector in 2D.

## Vectors in 3D

A vector can also be 3-dimensional.

The following video gives the formula, and some examples of finding the magnitude, or length, of a 3-dimensional vector.

Vectors : Magnitude of a vector 3D.