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Q:

# How many pixels are in a megabyte?

A:

The number of pixels in one megabyte depends on the color mode of the picture. For an 8-bit (256 color) picture, there are 1048576, or 1024 X 1024 pixels in one megabyte. This can be calculated using the file size calculator provided by the Northern Arizona University.

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For a 16-bit (65536 colors) picture, one megabyte contains 524288 (1024 X 512) pixels. For a 24-bit RGB (16.7 million colors) picture, one megabyte has approximately 349920 (486 X 720) pixels. For a 32-bit CYMK (16.7 million colors) picture, one megabyte has 262144 (512 X 512) pixels. For a 48-bit picture, one megabyte has only 174960 (486 X 360) pixels.

## Related Questions

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Resize a picture by clicking "resize," choosing 'maintain aspect ratio,' changing either the percentage or the pixels, clicking "OK" and then save the picture. These instructions work for Windows computers that have the Microsoft Paint program.

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Pixel resolution refers to the total number of pixels in a given digital image. A pixel is the smallest piece of an image as it is displayed. It can be thought of as a dot.

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A colorimeter measures in either absorbance or percent transmittance, both measures of how much light of a particular color a solution transmits. This is a relative measurement, and only has meaning based on a pre-set standard of another solution. The colorimeter measures the concentration of a given solution based on the amount it affects the transmission of light, with greater effects indicating greater concentrations.