Sine Calculator

Use our free sine calculator to find the sine (sin) of any angle. Supports degrees and radians.

Math

Angle (θ)

Angle Unit

Formula

Sine is a trigonometric function that relates an angle of a right triangle to the ratio of the opposite side to the hypotenuse.

sin(θ) = opposite / hypotenuse

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter the angle value.
2Choose degrees or radians.
3Click Calculate to get sin(θ).

Examples

sin(30°)

1.θ=30°
2.sin(30°) = 0.5

Result: 0.5000000000

sin(π/2 rad)

1.θ=π/2 rad
2.sin(π/2) = 1

Result: 1.0000000000

Frequently Asked Questions

Sine is the ratio of opposite side to hypotenuse in a right triangle.

sin(θ) ranges from -1 to 1 for real angles.

sin(0°) = 0.

sin(90°) = 1.

Choose the unit that matches your angle.

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CalculateMe Team

Last updated: 2026-07-14

Sine Calculator

Formula

How It Works

Examples

sin(30°)

sin(π/2 rad)

Frequently Asked Questions

What is sine?

Range of sine?

Sine of 0°?

Sine of 90°?

Degrees vs radians?

Related Calculators

Sine Calculator

Formula

How It Works

Examples

sin(30°)

sin(π/2 rad)

Frequently Asked Questions

What is sine?

Range of sine?

Sine of 0°?

Sine of 90°?

Degrees vs radians?

Related Calculators