Choose language

PL, EN, ES, DE, FR, RU


Circle - geometric figure calculator


Thanks to the calculator, you can easily calculate the area of a circle, the circumference of a circle, the area of a circle segment and the length of the circle arc.

KołoKoło
Wikipedia





Circle - Area



$$ \Large{S=\pi r^2 \approx 3.14r^2} $$
Radius (r)


Area (S)



Have you counted? - like and share

Circle - Circumference



$$ \Large{L=2\pi r \approx 6.28r} $$
Radius (r)


Circumference (L)





Circle - Field of a circle sector



$$ \Large{S=\frac{\alpha}{360}\pi r^2} $$
Radius (r)


Center angle of the sector (\( \alpha \))


Area (S)




Circle - Length of the arc of a circle



$$ \Large{L=\frac{\alpha \pi r}{180}} $$
Radius (r)


Center angle of the sector (\( \alpha \))

Length of the arc of a circle







Online calculator