What is 720p, 900p, 1080p

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720p, 900p, and 1080p refer to pixel resolutions. These numbers appear in monitor resolution specifications, digital camera video resolutions, and anywhere else resolution is specified. They refer to 1280x720, 1440x900, 1920x1080 respectively. Certain manufacturers are using these number to represent different resolutions. For example, Dell could mean 1600x900 by 900p. Therefore, it is always a good idea cross-check the meaning of these values.

The following tool allows user to calculate pixels per inch (ppi).

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