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Arc Length from Radians

Calculate arc length using the arc length from radians formula.

Arc length: -
Visual representation

Arc Length from Radians diagram

The diagram updates with your entries and is illustrative, not necessarily drawn to scale.

Calculation explained

How this result was calculated

The formula, your substituted values, and the evaluated result are shown below.

Reference: Formulae and Tables, State Examinations Commission (2014), page 10.
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How the Arc Length from Radians works

This calculator applies the formula given in Formulae and Tables, State Examinations Commission (2014), page 10. Enter values in consistent units.

Formula and inputs

radius × angle

Inputs: Radius, Central angle (radians).

Using the result

The result is rounded to 4 decimal places. Check units, assumptions and significant figures before using the answer.

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