120 Degrees to Radians

120° = 2π/3 rad

120 degrees equals 2π/3 rad, which is about 2.094395 radians.

Step by step

Multiply by π/180: 120 × π/180.
Simplify the fraction: 2π/3 rad.
As a decimal (π ≈ 3.14159): 2.094395 rad.

Details

Radians (π form): 2π/3 rad
Radians (decimal): 2.094395
Gradians: 133.3333
Turns: 0.33333
sin / cos / tan: 0.866025 / -0.5 / -1.732051
Position: Quadrant 2

How it works

A full turn is 360 degrees or 2π radians, so 180° equals π radians. To convert degrees to radians, multiply by π/180 and simplify the fraction; to convert back, multiply by 180/π. Radians are the standard angle unit in mathematics, physics and programming languages, where trigonometric functions expect their input in radians.

Nearby values

Degrees	Radians
60°	π/3 rad (1.0472)
75°	5π/12 rad (1.309)
90°	π/2 rad (1.5708)
105°	7π/12 rad (1.8326)
120°	2π/3 rad (2.0944)
135°	3π/4 rad (2.3562)
150°	5π/6 rad (2.618)
165°	11π/12 rad (2.8798)
180°	π rad (3.1416)

Related conversions

Frequently asked questions

What is 120 degrees in radians?

2π/3 rad ≈ 2.094395 rad.

How do you convert 120° to radians?

Multiply 120 by π/180.

What are sin, cos and tan of 120°?

0.866025 / -0.5 / -1.732051 (sin / cos / tan).

How many degrees is 2.0944 radians?

About 120°.