Mean wind vector calculator

Calculate resultant wind speed and resultant FROM direction with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use resultant wind speed and resultant FROM direction to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Wind speeds (m/s)
4,6,3
Wind directions FROM north (degrees)
0,90,225
Nonnegative observation weights
1,2,1
Resultant wind speed (m/s)
2.513933
Resultant FROM direction (degrees, or calm)
79.232346
Arithmetic mean scalar speed (m/s)
4.75

Try another scenario

Wind speeds (m/s)
5.0,6.0,3.0
Wind directions FROM north (degrees)
0,90,225
Nonnegative observation weights
1,2,1
Resultant wind speed (m/s)
2.572391
Resultant FROM direction (degrees, or calm)
73.753704
Arithmetic mean scalar speed (m/s)
5
Calculation method

Calculation method

Resultant wind speed (m/s)

Weighted mean east/north meteorological velocity components; direction undefined/calm when magnitude<1e-12.

Resultant FROM direction (degrees, or calm)

Weighted mean east/north meteorological velocity components; direction undefined/calm when magnitude<1e-12.

Arithmetic mean scalar speed (m/s)

Weighted mean east/north meteorological velocity components; direction undefined/calm when magnitude<1e-12.

Symbols and units
a
Wind speeds (m/s)
b
Wind directions FROM north (degrees)
c
Nonnegative observation weights

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Weighted mean east/north meteorological velocity components; direction undefined/calm when magnitude<1e-12.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Share this page
Share this calculator

Leave unchecked to share the page without your entered values.