Digital
Aspect Ratio Calculator
Enter width and height to get the simplified aspect ratio, screen orientation, and megapixels.
Calculate aspect ratio
Aspect ratio uses the simplest whole-number width:height relationship. 1920 x 1080 simplifies to 16:9.
How to use this calculator
- Enter the values the calculator asks for.
- Check the instant result and alternate values below it.
- Use the chart and formula to verify common examples.
aspect ratio calculator chart
| Size | Ratio | Common match | Megapixels |
|---|---|---|---|
| 1920 x 1080 | 16:9 | 16:9 | 2.0736 MP |
| 1280 x 720 | 16:9 | 16:9 | 0.9216 MP |
| 1080 x 1080 | 1:1 | 1:1 | 1.1664 MP |
| 1920 x 1200 | 8:5 | about 16:10 | 2.304 MP |
| 2560 x 1440 | 16:9 | 16:9 | 3.6864 MP |
| 3440 x 1440 | 43:18 | about 21:9 | 4.9536 MP |
| 1080 x 1920 | 9:16 | 9:16 | 2.0736 MP |
Formula
aspect ratio = width / gcd(width, height) : height / gcd(width, height)
Source
Decimal SI prefixes and binary 1024-based prefixes for digital storage.
Common questions
How does the Aspect Ratio Calculator work?
Enter width and height to get the simplified aspect ratio, screen orientation, and megapixels.
What formula does this calculator use?
aspect ratio = width / gcd(width, height) : height / gcd(width, height)
Is the result exact?
Decimal SI prefixes and binary 1024-based prefixes for digital storage. Some displayed values are rounded for readability, but the calculator keeps more precision internally.