Aspect Ratio Calculator
Enter width and height to convert to the simplest ratio.
Calculate Ratio
:
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Simplified Ratio
16:9
Decimal Ratio
1.778:1
Common Ratios
Calculate Dimensions from Ratio
Calculated Width
1920 px
Calculated Height
1080 px
How to Use
1
Enter Width and Height
Input the pixel dimensions of your image or video.
2
Check Simplified Ratio
Automatically converts to the simplest integer ratio.
3
Reverse Calculation
Calculate dimensions from a ratio and base value.
What is Aspect Ratio Calculation
Aspect ratio is the proportional relationship between width and height. 1920×1080px is 16:9, 1080×1080px is 1:1. It's essential for content creation and responsive design to maintain proper proportions.
Features
- Simplify to GCDReduce to simplest integer ratio using greatest common divisor
- Decimal RatioAlso shows X:1 decimal format
- Reverse CalculationCalculate dimensions from ratio and base value
- PresetsOne-click input for common ratios
Use Cases
- Check image/video aspect ratios
- Verify social media post dimensions
- Check OGP image ratio (1.91:1)
- Calculate responsive image sizes
- CSS aspect-ratio property values
FAQ
What is aspect ratio?
Aspect ratio is the proportional relationship between width and height of an image or screen. 16:9 means "16 units wide for every 9 units tall" and is used for Full HD (1920×1080) and most videos.
Why simplify the ratio?
16:9 is easier to understand and compare than 1920:1080. Dividing by the greatest common divisor gives the simplest integer ratio.
Can I use this for CSS aspect-ratio?
Yes, you can directly use the result in CSS aspect-ratio property. Example: aspect-ratio: 16 / 9;