The next equations show how you can instead find the diameter from them. A circle of radius 1.25 or diameter 2.5 or area 4.909 inches has a circumference of 7.854 inches which is equal to: Use the this circumference length calculator above to find the perimeter of a circle given its diameter, or other parameters. My laptop has a wide screen, size 13.6x7.6 inches, and resolution is 1366x768 pixels, we can calculate this, 1366 divided by 13.6 is 100.44, so the pixels per inch is 100.44 Search 'display by pixel density' online, i am lucky and found my screen has 100 pixels per inch. Starting from the diameter, you can easily find the other two. The circumference – the length of the outside boundaries of the circle.Please set your diagonal monitor size (in inches): Not sure what your monitor size is Related. Just select your monitor size, and Pective will display it life size. The radius – the distance from the circle's center or origin to the edge, one half the diameter See the actual size of a 4 x 4 inch square right on your monitor.There are three dimensions most often used to describe a circle: This is an online virtual ruler, it could be adjusted to an actual size, and has both metric and imperial scale units, before you use it, please set the pixels per inch to your own device. If you draw two opposing line segments from the circle's origin to the edge, you just drew the diameter. 6 inch circle Actual Size Image 6 inch circle Accuracy 40 voted correct Tags inch ruler 12 Please set your diagonal monitor size (in inches): Not sure what your monitor size is No comments yet. The diameter of a circle is the distance from edge to edge of a circle passing through its origin or center.Ĭonveniently, it is twice as long as the radius of a circle.

How far around is a circle that is 5 inches across Diameter. Below is a diameter calculator, which will compute a circle's radius, circumference, and area if you know the diameter.ĭo you know a different dimension? Instead try one of the related circle dimension calculators:ĭiameter Calculator What is a Circle's Diameter? What is the circumference of a circle with a diameter of 5 in How far around is a circle that is 5 inches across.

6 inch circle actual size