# Circumference of a 1 Centimeter Diameter Circle

What is the circumference of a circle with a diameter of 1 cm? How far around is a circle that is 1 centimeter across?
Diameter
cm
Diameter
ft
in
Diameter
meters
Units
Circumference of a 1cm diameter circle
 3.1416 centimeters 0.031416 meters 0.10307 feet 1.2368 inches 0′ 1.2368″ feet and inches
results may be rounded

#### Circumference of a Circle Formula

The circumference of a circle is pi times its diameter.

Circumference = π * Diameter

#### Diameter of a Circle

The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.

Circle Circumference by Diameter
results may be rounded
Diameter cm in ft
1.0 cm 3.142 1.237 0.1031
1.1 cm 3.456 1.361 0.1134
1.2 cm 3.770 1.484 0.1237
1.3 cm 4.084 1.608 0.1340
1.4 cm 4.398 1.732 0.1443
1.5 cm 4.712 1.855 0.1546
1.6 cm 5.027 1.979 0.1649
1.7 cm 5.341 2.103 0.1752
1.8 cm 5.655 2.226 0.1855
1.9 cm 5.969 2.350 0.1958
2.0 cm 6.283 2.474 0.2061
2.1 cm 6.597 2.597 0.2164
2.2 cm 6.912 2.721 0.2268
2.3 cm 7.226 2.845 0.2371
2.4 cm 7.540 2.968 0.2474
2.5 cm 7.854 3.092 0.2577
2.6 cm 8.168 3.216 0.2680
2.7 cm 8.482 3.339 0.2783
2.8 cm 8.796 3.463 0.2886
2.9 cm 9.111 3.587 0.2989
3.0 cm 9.425 3.711 0.3092
3.1 cm 9.739 3.834 0.3195
3.2 cm 10.05 3.958 0.3298
3.3 cm 10.37 4.082 0.3401
3.4 cm 10.68 4.205 0.3504
Diameter cm in ft
3.5 cm 11.00 4.329 0.3607
3.6 cm 11.31 4.453 0.3711
3.7 cm 11.62 4.576 0.3814
3.8 cm 11.94 4.700 0.3917
3.9 cm 12.25 4.824 0.4020
4.0 cm 12.57 4.947 0.4123
4.1 cm 12.88 5.071 0.4226
4.2 cm 13.19 5.195 0.4329
4.3 cm 13.51 5.318 0.4432
4.4 cm 13.82 5.442 0.4535
4.5 cm 14.14 5.566 0.4638
4.6 cm 14.45 5.689 0.4741
4.7 cm 14.77 5.813 0.4844
4.8 cm 15.08 5.937 0.4947
4.9 cm 15.39 6.061 0.5050
5.0 cm 15.71 6.184 0.5154
5.1 cm 16.02 6.308 0.5257
5.2 cm 16.34 6.432 0.5360
5.3 cm 16.65 6.555 0.5463
5.4 cm 16.96 6.679 0.5566
5.5 cm 17.28 6.803 0.5669
5.6 cm 17.59 6.926 0.5772
5.7 cm 17.91 7.050 0.5875
5.8 cm 18.22 7.174 0.5978
5.9 cm 18.54 7.297 0.6081