How many pixels are in one megapixel?

How many pixels are in one megapixel?

• A. 1,000
• B. 10,000
• C. 100,000
• D. 1,000,000

Answer: (D)

One megapixel means one million pixels. The prefix mega denotes million, so in digital imaging the total pixel count is the product of the image’s width and height, and reaching about a million pixels is described as a megapixel. The other numbers are thousands or tens of thousands, not a million, so they don’t match the meaning of megapixel. For context, a common full-HD image of 1920 by 1080 contains 1920 × 1080 = 2,073,600 pixels, about 2.07 megapixels.

One megapixel means one million pixels. The prefix mega denotes million, so in digital imaging the total pixel count is the product of the image’s width and height, and reaching about a million pixels is described as a megapixel. The other numbers are thousands or tens of thousands, not a million, so they don’t match the meaning of megapixel. For context, a common full-HD image of 1920 by 1080 contains 1920 × 1080 = 2,073,600 pixels, about 2.07 megapixels.