Aspect Ratio & Screen Resolution Calculator
Calculate aspect ratios, pixel counts, and megapixels, resize dimensions while maintaining proportions, and explore standard video and social media viewport templates. 100% private.
Source Resolution (Pixels)
Decimal Ratio: 1.778 • Total: 2,073,600 px (2.07 MP)
Standard Video & Display Aspect Ratios
| Ratio | Decimal | Sample Resolution | Primary Medium |
|---|---|---|---|
| 16:9 | 1.778 | 1920 × 1080 (FHD) | YouTube, TV, modern computer monitors |
| 9:16 | 0.563 | 1080 × 1920 | TikTok, Instagram Reels, YouTube Shorts |
| 4:3 | 1.333 | 1024 × 768 | Classic TV, iPad displays, retro gaming |
| 1:1 | 1.000 | 1080 × 1080 | Instagram square post, profile avatars |
| 21:9 | 2.333 | 3440 × 1440 | Ultrawide gaming, cinema widescreen |
Standard Display Resolutions & Megapixel Ratings
| Name | Dimensions | Total Pixels | Megapixels (MP) |
|---|---|---|---|
| 720p HD | 1280 × 720 | 921,600 | 0.92 MP |
| 1080p Full HD | 1920 × 1080 | 2,073,600 | 2.07 MP |
| 1440p QHD / 2K | 2560 × 1440 | 3,686,400 | 3.69 MP |
| 4K UHD | 3840 × 2160 | 8,294,400 | 8.29 MP |
How to Calculate Aspect Ratios Online
- Enter Dimensions: Input width and height in pixels or select a preset.
- View Reduced Ratio: The calculator reduces the numbers to standard simplified aspect ratios (e.g. 16:9).
- Resize Proportions: Enter a target width in the scaling box to immediately compute the exact proportional height.
Frequently Asked Questions
100% In-Browser Privacy
All dimension ratios and pixel calculations execute locally on your machine with zero server interactions.
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