Aspect Ratio Calculator
16:91920 × 1080
Live Preview
px
px
Aspect Ratio16:9
Decimal Ratio1.7778
Total Pixels2,073,600
Megapixels2.07 MP
Common Aspect Ratios
Click to apply ratio (keeps width fixed)
Square1:1Social media, profile pics
Classic TV4:3Old TVs, presentations
Photo3:235mm film, DSLR photos
Widescreen16:9HD video, monitors
Ultrawide21:9Ultrawide monitors, cinema
Super Ultrawide32:9Super ultrawide monitors
Cinema2.39:1Anamorphic widescreen
IMAX1.43:1IMAX film format
Portrait Photo2:3Portrait orientation
Instagram Portrait4:5Instagram portrait posts
Instagram Story9:16Stories, Reels, TikTok
A4 Paper1:1.414A-series paper (ISO 216)
Resolution Presets
| Name | Dimensions | Ratio | |
|---|---|---|---|
| HD (720p) | 1280 × 720 | 16:9 | |
| Full HD (1080p) | 1920 × 1080 | 16:9 | |
| 2K (QHD) | 2560 × 1440 | 16:9 | |
| 4K (UHD) | 3840 × 2160 | 16:9 | |
| 8K (UHD) | 7680 × 4320 | 16:9 | |
| Instagram Square | 1080 × 1080 | 1:1 | |
| Instagram Portrait | 1080 × 1350 | 4:5 | |
| Instagram Story | 1080 × 1920 | 9:16 | |
| Twitter Post | 1200 × 675 | 16:9 | |
| Facebook Cover | 820 × 312 | 2.63:1 | |
| YouTube Thumbnail | 1280 × 720 | 16:9 | |
| LinkedIn Banner | 1584 × 396 | 4:1 |
Quick Tips
Lock Dimensions
Click the lock icon to fix width or height, then select a ratio to calculate the other dimension automatically.
16:9 Standard
16:9 is the most common aspect ratio for modern displays, video, and streaming platforms.
Social Media
Use 1:1 for feed posts, 4:5 for portrait posts, and 9:16 for Stories/Reels/TikTok.
Print vs Screen
Photos are often 3:2 or 4:3, while screens are typically 16:9. Cropping may be needed when converting.