Convert Circles

Protractors are often used to measure angle

Circles are a measure of angle, and can be abbreviated as cir. For example 1 circle can be written as 1 cir.

Circle Conversion Calculators

Choose an imperial or metric unit to convert circles to.

Convert circles to degrees
1 circle is equal to 360 degrees
Convert circles to radians
1 circle is equal to 6.283185 radians
Convert circles to grad
1 circle is equal to 400 grad
Convert circles to revolutions
1 circle is equal to 1 revolutions
Convert circles to mils
1 circle is equal to 6,400 mils

We have many more angle conversion tools that you might also find useful.

Circles unit of measurement conversion

Circles Measurement Conversion Table

Common circle values and equivalent imperial and metric angle measurements
circles degrees radians grad revolutions mils
1 cir 360° 6.283185 rad 400g 1 r 6,400 mil
2 cir 720° 12.566371 rad 800g 2 r 12,800 mil
3 cir 1,080° 18.849556 rad 1,200g 3 r 19,200 mil
4 cir 1,440° 25.132741 rad 1,600g 4 r 25,600 mil
5 cir 1,800° 31.415927 rad 2,000g 5 r 32,000 mil
6 cir 2,160° 37.699112 rad 2,400g 6 r 38,400 mil
7 cir 2,520° 43.982297 rad 2,800g 7 r 44,800 mil
8 cir 2,880° 50.265482 rad 3,200g 8 r 51,200 mil
9 cir 3,240° 56.548668 rad 3,600g 9 r 57,600 mil
10 cir 3,600° 62.831853 rad 4,000g 10 r 64,000 mil
11 cir 3,960° 69.115038 rad 4,400g 11 r 70,400 mil
12 cir 4,320° 75.398224 rad 4,800g 12 r 76,800 mil
13 cir 4,680° 81.681409 rad 5,200g 13 r 83,200 mil
14 cir 5,040° 87.964594 rad 5,600g 14 r 89,600 mil
15 cir 5,400° 94.24778 rad 6,000g 15 r 96,000 mil
16 cir 5,760° 100.530965 rad 6,400g 16 r 102,400 mil
17 cir 6,120° 106.81415 rad 6,800g 17 r 108,800 mil
18 cir 6,480° 113.097336 rad 7,200g 18 r 115,200 mil
19 cir 6,840° 119.380521 rad 7,600g 19 r 121,600 mil
20 cir 7,200° 125.663706 rad 8,000g 20 r 128,000 mil