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Trigonometry Calculators

Sine Calculator

Calculate sin(θ) for any angle in degrees or radians, with exact values for special angles and the related reciprocal function.

Enter values

Results update as you type.

Result

sin(θ)

0.5

csc(θ)
2
Angle in radians
0.52359878
Angle in degrees
30

About the Sine Calculator

Calculate sin(θ) for any angle in degrees or radians, with exact values for special angles and the related reciprocal function.

Also known as: sin calculator, sin of angle, sine function, sin x.

How to use this calculator

  1. Enter angle θ, unit.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

sin θ = opposite / hypotenuse

Worked example

Using the values pre-filled in the calculator above:

  • Angle θ = 30
  • Unit: Degrees

the calculator returns:

  • sin(θ): 0.5
  • csc(θ): 2
  • Angle in radians: 0.52359878
  • Angle in degrees: 30