Aspect Ratio Calculator
Calculate aspect ratios and scale dimensions while maintaining proportions.
Original Dimensions
Aspect Ratio
Simplified
16:9
Decimal
1.7778
CSS aspect-ratio
16 / 9
1920 × 1080
Scale Dimensions
Common Resolutions
| Name | Resolution | Aspect Ratio | |
|---|---|---|---|
| HD (720p) | 1280 × 720 | 16:9 | |
| Full HD (1080p) | 1920 × 1080 | 16:9 | |
| 2K (1440p) | 2560 × 1440 | 16:9 | |
| 4K (2160p) | 3840 × 2160 | 16:9 | |
| 8K (4320p) | 7680 × 4320 | 16:9 | |
| iPhone 15 Pro | 1179 × 2556 | 131:284 | |
| iPad Pro 12.9" | 2048 × 2732 | 512:683 | |
| MacBook Pro 16" | 3456 × 2234 | 1728:1117 |
What is Aspect Ratio?
Aspect ratio is the proportional relationship between the width and height of an image or screen. It's expressed as two numbers separated by a colon (e.g., 16:9) or as a decimal value.
Common Aspect Ratios
- 16:9 - Standard widescreen (HD, 4K video)
- 4:3 - Traditional TV and computer monitors
- 1:1 - Square format (Instagram posts)
- 21:9 - Ultrawide monitors and cinematic video
- 9:16 - Vertical video (TikTok, Instagram Reels)
Why Aspect Ratio Matters
- Ensures images scale without distortion
- Helps choose the right resolution for your display
- Essential for video editing and streaming
- Important for responsive web design