LensCalc

Megapixel Calculator

Width × height = how many megapixels?

Width (px)

Height (px)

Megapixels

24 MP

Total Pixels: 24,000,000
Aspect Ratio: 3:2

What you entered

Width (px): 6000Height (px): 4000

1
Total pixels
6,000 x 4,000= 24,000,000
2
Megapixels
24,000,000 / 1,000,000= 24 MP
3
Aspect ratio
6,000 : 4,000 (GCD = 2,000)= 3:2

Result

Megapixels: 24 MP

Megapixels for common image dimensions

Megapixels are width times height divided by a million. The aspect ratio comes from reducing the two dimensions.

Dimensions	Total pixels	Megapixels	Aspect ratio
1920 x 1080	2,073,600	2.1 MP	16:9
3840 x 2160	8,294,400	8.3 MP	16:9
4000 x 3000	12,000,000	12.0 MP	4:3
6000 x 4000	24,000,000	24.0 MP	3:2
8256 x 5504	45,441,024	45.4 MP	3:2
9504 x 6336	60,217,344	60.2 MP	3:2

4K video is only 8.3 MP, less than any modern stills camera, which is why a still frame grabbed from 4K footage looks soft next to a photograph. Doubling linear resolution quadruples the megapixel count.

Megapixels = total pixels ÷ 1 million

A 6000×4000 image has 24 million pixels, or 24 megapixels — the calculation is simply width × height divided by one million, with the aspect ratio found by reducing the dimensions to their simplest ratio (6000:4000 = 3:2).

More megapixels isn't always better

Beyond about 20MP, the marginal benefit of more pixels depends entirely on your use case — larger prints and heavy cropping benefit, but for social media or web use, a 12MP phone camera produces more resolution than the output medium can display.

Frequently asked questions

My camera shoots 8256×5504 — how many megapixels is that?

8256 × 5504 = 45,417,024 pixels, or about 45.4 megapixels. That's a Sony A7R IV-class resolution, enough for large prints up to 27×18 inches at 300 DPI.

How is the megapixel calculator different from the print size calculator?

The megapixel calculator converts pixel dimensions to a total pixel count and aspect ratio. The print size calculator goes further — it takes those pixels and a target DPI to tell you the maximum print dimensions at a given quality level.

How many megapixels do I need for a 4K display?

4K (3840×2160) is only 8.3 megapixels. Even a 12MP phone camera produces more than enough resolution for 4K output. For 8K (7680×4320) you'd need 33.2MP.