Example
1920 × 1080 → 16:9 (Widescreen)
Resolution to Aspect Ratio Calculator
Find the aspect ratio and megapixel count of any screen or image resolution (1920x1080, etc.) instantly in your browser. Free online resolution calculator.
Enter the values below, then press Calculate (or press Enter). The calculator updates your results instantly. Try different values to see how your inputs change the outcome.
- Width (pixels) — enter a numeric amount.
- Height (pixels) — enter a numeric amount.
- Review your results — the key output is highlighted, with supporting figures below.
Loading calculator…
Results
Result
| Detail | Value |
|---|---|
| Aspect ratio | |
| Megapixels | |
| Category | |
| Decimal ratio |
What is this calculator for?
Reduce any pixel resolution to its simplest aspect ratio and report its megapixel count.
How to Use This Calculator
Enter the values below, then press Calculate (or press Enter). The calculator updates your results instantly. Try different values to see how your inputs change the outcome.
- Width (pixels) — enter a numeric amount.
- Height (pixels) — enter a numeric amount.
- Review your results — the key output is highlighted, with supporting figures below.
What You'll Need
- Width (pixels)
- a numeric amount range 1–∞ · required
- Height (pixels)
- a numeric amount range 1–∞ · required
About This Calculator
Feed in the pixel width and height and this calculator reduces them to their simplest integer ratio (e.g. 1920×1080 → 16:9).
It also reports the total megapixels and labels common ratios (widescreen, standard, photo, etc.). Matching the ratio to the intended display avoids distortion and unneeded letterboxing.
Calculation runs instantly in your browser.
Worked Examples
Frequently Asked Questions
Why do 1920×1080 and 2560×1440 both show 16:9?
They share the same simplest ratio (16:9) but differ in resolution — the number of pixels. This tool reports the ratio; "megapixels" captures the resolution difference.
What is 9:16?
It is the portrait version of widescreen, used for vertical video (TikTok, Reels, Shorts) where the height exceeds the width.