Arc Length Calculator

Calculate arc length, chord length, sector area, and segment area using radius and angle. Full visual representation.

Radius (r) *

units

Angle (θ) *

Angle in degrees (0-360)

Angle Input Unit

Output Unit

Decimal Precision

Show Calculation Steps

⚠️

Arc Length & Sector Area

Arc Length

—

Sector Area

—

Chord Length

—

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Arc Visualization

Graphical representation of your arc

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Calculation Breakdown

Step-by-step arc calculations

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Arc Length

—

s = r × θ

⭕

Sector Area

—

A = ½r²θ

📏

Chord Length

—

c = 2r × sin(θ/2)

📊

Segment Area

—

Segment = Sector - Triangle

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Arc Formulas

All related arc and circle calculations

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Arc Geometry Tips

Understanding arcs and sectors

📐 Mathematical Disclaimer: This arc length calculator uses standard geometric formulas. Results are for educational purposes. Ensure consistent units. For full circles, the arc length = circumference.