Aspect Ratio Calculator
Find the missing width or height for any aspect ratio.
Values saved on this device.
1920 × 108016:9
Proportional preview
Common 16:9 sizes
Tap a row to load it into the calculator.
| W | H |
|---|---|
| 720 | |
| 1080 | |
| 1440 | |
| 2160 |
Missing height for 16:9? Find it in seconds
- Choose an aspect ratio preset such as 16:9, 9:16, 4:3 or 1:1.
- Type the width to get the height, or the height to get the width.
- Copy the WxH result or share the exact sizes with a link.
Good to know
If the width is 1920 in 16:9, what should the height be?
1080. Divide the width by 16 and multiply by 9. This calculator rounds to whole pixels, so very wide ratios may differ by one pixel.
How do I simplify an aspect ratio?
Divide both sides by their greatest common divisor. For 1920x1080 that gives 16:9. The result line shows the simplified form of your current sizes.
Which ratio should I use for video and social?
Use 16:9 for YouTube and screens, 9:16 for Reels, Shorts and TikTok, 1:1 for feeds and 4:3 for classic displays. Pick the preset before typing a size.