WORKED EXAMPLE
How many megapixels is 6000 × 4000?
Multiplying the dimensions gives 24,000,000 pixels, which equals 24 megapixels. At 300 PPI, the uncropped image prints at 20 × 13.3 inches.
6000 × 4000 ÷ 1,000,000 = 24 MPCamera resolution
Megapixel calculator
Turn image dimensions into megapixels and see what that resolution means for real-world printing.
◆ Runs locally in your browser
Total resolution
24.0 MPAt 300 PPI
20.0 × 13.3 inAt 150 PPI
40.0 × 26.7 inHOW TO CALCULATE MEGAPIXELS
Translate resolution into a useful print size.
Megapixels describe total pixel count. Width and height tell you the image shape and the print sizes it can produce.
- 01
Enter pixel dimensions
Use the full-resolution width and height shown in your image properties or camera specifications.
- 02
Read the megapixels
The calculator multiplies width by height and divides the result by one million.
- 03
Plan the print
Compare sizes at 300 PPI for close viewing and 150 PPI for larger, farther-viewed prints.
BEFORE YOU PRINT
Megapixels are only one quality factor.
Sharp focus, lens quality, noise, compression, editing and viewing distance all influence the final result. A high megapixel number cannot repair a blurred or heavily compressed photograph.
Check a particular output size with the image DPI checker.
HOW IT WORKS
A clear answer, with the math to match.
Formula
megapixels = width × height ÷ 1,000,0006000 × 4000 pixels equals 24 megapixels and prints at 20 × 13.3 inches at 300 PPI.
COMMON QUESTIONS
Useful context, not filler.
Does more megapixels always mean better quality?＋
No. Lens quality, focus, noise, processing, compression, and lighting also affect the usable detail in an image.
How many megapixels do I need for an 8 × 10 print?＋
An 8 × 10 print at 300 PPI requires 2400 × 3000 pixels, or 7.2 megapixels.
Why is the camera's aspect ratio important?＋
Megapixels describe total pixel count, but width and height determine which print sizes fit without cropping.