Convert Radians to Circles

Enter your radian value in the form below to get the value calculated in circles.

Results in Circles:

1 rad = 0.159155 cir

How to Convert Radians to Circles Using an Easy Conversion Formula

Protractors are often used to measure angle

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Convert radians to circles with this simple formula:

circles = radians × 0.159155

Converting a radian angle measurement to a circle measurement involves multiplying your angle by the conversion ratio to find the result. A radian is equal to 0.159155 circles, so to convert simply multiply by 0.159155.

For example:

5 rad = (5 × 0.159155) = 0.795775 cir

Radians and circles are both units used to measure angle. Learn more about angle and find more angle measurement conversion calculators. A radian is an angle measurement and can be abbreviated as rad, for example 1 rad. A circle is an angle measurement and can be abbreviated as cir, for example 1 cir.

A radian is the measurement of the angle from the start to the end of an arc equal to the radius of the circle. 1 radian is equal to 180/π, or about 57.29578°. There are about 6.28318 radians in a circle. The radian is the standard SI unit of measurement for an angle.

A circle is the equivalent of 1 revolution around a circle, or 360°.

radians and circles are units used to measure angle

Convert Circles to Radians

Radian Measurements and Equivalent Circle Conversions

Common radian values converted to the equivalent circle value
Radians	Circles
1 rad	0.159155 cir
2 rad	0.31831 cir
3 rad	0.477465 cir
4 rad	0.63662 cir
5 rad	0.795775 cir
6 rad	0.95493 cir
7 rad	1.1141 cir
8 rad	1.2732 cir
9 rad	1.4324 cir
10 rad	1.5915 cir
11 rad	1.7507 cir
12 rad	1.9099 cir
13 rad	2.069 cir
14 rad	2.2282 cir
15 rad	2.3873 cir
16 rad	2.5465 cir
17 rad	2.7056 cir
18 rad	2.8648 cir
19 rad	3.0239 cir
20 rad	3.1831 cir
21 rad	3.3423 cir
22 rad	3.5014 cir
23 rad	3.6606 cir
24 rad	3.8197 cir
25 rad	3.9789 cir
26 rad	4.138 cir
27 rad	4.2972 cir
28 rad	4.4563 cir
29 rad	4.6155 cir
30 rad	4.7746 cir
31 rad	4.9338 cir
32 rad	5.093 cir
33 rad	5.2521 cir
34 rad	5.4113 cir
35 rad	5.5704 cir
36 rad	5.7296 cir
37 rad	5.8887 cir
38 rad	6.0479 cir
39 rad	6.207 cir
40 rad	6.3662 cir