Aspect Ratio Calculator
Enter the desired aspect ratio (e.g. 16:9). Then enter the Width OR Height. We will calculate the remaining dimension for you.
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Common Ratios
Examples of use
- Calculate the correct height for a 1920px wide 16:9 video
- Find the aspect ratio of a 3000x2000 photo
- Determine dimensions for a 4:3 thumbnail from a given width
When to use this tool?
- When resizing images and need to maintain proportions
- When creating video content with specific aspect ratios
- When designing layouts that require precise dimensions
Frequently asked questions
- How do I use this calculator?
- Enter any two of: width, height, or ratio. The calculator will determine the missing value. You can also click common ratio presets to auto-fill.
- What are common aspect ratios?
- 16:9 (widescreen), 4:3 (standard), 1:1 (square), 21:9 (ultrawide), and 3:2 (photography) are the most common ratios used in media and design.