Convert Circles to Revolutions

Enter the angle in circles below to get the value converted to revolutions.

SWAP UNITS
Results in Revolutions:
Loading content.
1 cir = 1 r

How to Convert Circles to Revolutions

Protractors are often used to measure angle

To convert a circle measurement to a revolution measurement, divide the angle by the conversion ratio. One revolution is equal to 1 circle, so use this simple formula to convert:

revolutions = circles ÷ 1

The angle in revolutions is equal to the circles divided by 1.

For example, here's how to convert 5 circles to revolutions using the formula above.
5 cir = (5 ÷ 1) = 5 r

Circles and revolutions are both units used to measure angle. Keep reading to learn more about each unit of measure.

Circles

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

A circle is sometimes also referred to as a revolution. Circles can be abbreviated as cir, for example 1 circle can be written as 1 cir.

Revolutions

A revolution, or turn, is equal to 1 rotation around a circle, or 360°. Revolutions are commonly used to measure the speed of rotation, for example when measuring the revolutions per minute (RPM) of a vehicle's engine.

A revolution is sometimes also referred to as a turn, cycle, or complete rotation. Revolutions can be abbreviated as r, and are also sometimes abbreviated as rev or cyc. For example, 1 revolution can be written as 1 r, 1 rev, or 1 cyc.

Circle to Revolution Conversion Table

Circle measurements converted to revolutions
Circles Revolutions
1 cir 1 r
2 cir 2 r
3 cir 3 r
4 cir 4 r
5 cir 5 r
6 cir 6 r
7 cir 7 r
8 cir 8 r
9 cir 9 r
10 cir 10 r
11 cir 11 r
12 cir 12 r
13 cir 13 r
14 cir 14 r
15 cir 15 r
16 cir 16 r
17 cir 17 r
18 cir 18 r
19 cir 19 r
20 cir 20 r
21 cir 21 r
22 cir 22 r
23 cir 23 r
24 cir 24 r
25 cir 25 r
26 cir 26 r
27 cir 27 r
28 cir 28 r
29 cir 29 r
30 cir 30 r
31 cir 31 r
32 cir 32 r
33 cir 33 r
34 cir 34 r
35 cir 35 r
36 cir 36 r
37 cir 37 r
38 cir 38 r
39 cir 39 r
40 cir 40 r