Thousands of pixels combine to make up a larger image
A pixel is an individual point of color on a monitor. Imagine a computer monitor as thousands of tiny dots of color--when viewed from a distance, the dots merge to form a larger overall image; however, when magnified, individual points of color are visible--and are known as pixels. Calculating the size of a pixel on a computer screen requires input of the resolution as well as a diagonal measurement of the screen.
Instructions
Finding Screen Resolution Online
1. Open a new web browser window.
2. Go to the "What Is My Screen Resolution" website (see Resources.)
3. Make a note of the figure under the "You Are Using" text.
Measuring Diagonal Size
4. Extend the tape measure diagonally across the screen from corner to corner.
5. Measure the distance between each corner.
6. Make a note of the measurement in inches alongside the screen resolution measurement.
Calculating Pixel Size
7. Open a new web browser window and go to the "Pixel Size Calculator" website.
8. Enter the screen resolution size in the top box.
9. Enter the diagonal measurement, rounded to the nearest inch, in the "Diagonal Size" box.
10. Click "Calculate" and make a note of the size in millimeters.
Tags: Pixel Size, browser window, diagonal measurement, Diagonal Size, Make note