How to Calculate Pixels

By Christopher Kennedy

A digital camera or video camera's resolution is measured in pixels. A pixel represents one dot of color on your computer's screen, and the amount of pixels in an image is a good indicator of how large the image or video is. Consumer digital cameras are measured in megapixels, a measurement that is important in terms of image quality and cropping. Knowing how many megapixels a camera has is a good starting point to determine how large an image you can print or how to crop it to a desired size. Calculating megapixels is simple and easy to do.

Step 1

Locate the image for which you want to calculate the number of pixels.

Step 2

Right-click on the image and select "Properties" from the resulting menu.

Step 3

Click the "Details" tab and scroll to the "Image" header.

Step 4

Make a note of the numbers in the "Width" and "Height" fields.

Step 5

Run your calculator program and multiply the two numbers together. The resulting number is the amount of pixels you have. One million pixels is equal to one megapixel.