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Vector Norm Calculator

Vector norms of 2-D or 3-D vectors, with exact fractions and the working.

Change the values and press Calculate to work out your own figures.

Enter the vector components (leave z blank for 2-D).

About a xx-component of vector a.
About a yy-component of vector a.
About a zz-component of vector a.
Result
Euclidean norm ‖a‖₂
5
L1 norm ‖a‖₁
7
L∞ norm ‖a‖∞
4
‖a‖₂ as a decimal
5

‖(3, 4)‖₂ = 5.

Show the working
  1. ‖a‖₁ = Σ|aᵢ|; ‖a‖₂ = √Σaᵢ²; ‖a‖∞ = max|aᵢ|

How to use it

Enter the vector components (leave z blank for 2-D).

Enter coordinates as whole numbers, decimals or fractions (3/4). Show the working gives the formula with your numbers.

Key facts

‖a‖₁ = Σ|aᵢ|; ‖a‖₂ = √Σaᵢ²; ‖a‖∞ = max|aᵢ|

Components

Enter the x-, y- and (optionally) z-components; leave z blank for vectors in a plane.

Questions

How is the vector norms worked out?

‖a‖₁ = Σ|aᵢ|; ‖a‖₂ = √Σaᵢ²; ‖a‖∞ = max|aᵢ|

Can I use fractions?

Yes, such as 1/2 or -3/4.

Formulas

‖a‖₁ = Σ|aᵢ|; ‖a‖₂ = √Σaᵢ²; ‖a‖∞ = max|aᵢ|

Sources

Limitations

  • Vectors have two or three components (leave z blank for 2-D).
  • Earth distances assume the WGS 84 ellipsoid (sea level).

Formula version 0.1.0Reviewed