Megapixel Calculator


About Megapixel Calculator (Formula)

A “Megapixel Calculator” is a tool used to determine the resolution or image size of a digital photograph or camera based on the number of megapixels it contains. Megapixels are a measure of the total number of pixels in an image, and they play a significant role in defining the level of detail and quality of digital images. The megapixel calculator helps photographers, designers, and consumers understand the potential image dimensions and quality based on the megapixel count.

The formula for calculating the image resolution based on megapixels is:

Image Resolution = √(Megapixels × (1000000 / Aspect Ratio))


  • Image Resolution is the size of the image in pixels, both width and height.
  • Megapixels is the total number of megapixels in the image.
  • Aspect Ratio is the ratio of the image’s width to its height.

This formula calculates the dimensions of the image in pixels, both width and height, based on the megapixel count and aspect ratio. The aspect ratio is essential for determining whether the image is in landscape (horizontal) or portrait (vertical) orientation.

For example, if you have a 16-megapixel camera with a 4:3 aspect ratio, the calculation would be:

Image Resolution = √(16 MP × (1000000 / 4/3)) = √(16000000 / 1.3333) ≈ 4000 x 3000 pixels

This means that the resulting image would have a resolution of approximately 4000 pixels wide by 3000 pixels high.

The Megapixel Calculator is a handy tool for photographers and consumers looking to understand the potential image size and quality of their digital photos. Higher megapixel counts generally result in larger and more detailed images, which are useful for printing, cropping, and retaining image quality when zooming in.

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