Aspect Ratio Calculator
Calculate perfect image dimensions for any aspect ratio. Enter your desired aspect ratio and one dimension, we'll calculate the other. Perfect for Instagram, YouTube, and all social media platforms.
Aspect Ratio
Calculate Dimensions
Result:
1920 × 1080 px
Aspect Ratio: 16:9
Common Aspect Ratios
How to Use
Enter your desired aspect ratio (e.g., 16:9 for YouTube, 1:1 for Instagram)
Choose whether you know the width or height
Enter the known dimension in pixels
The calculator instantly shows the other dimension to maintain the aspect ratio
Dial in scroll-stopping thumbnails with ThumbCraft, which applies your aspect ratio math directly to social media cover art.
Need loopable previews for clients? Convert short clips in VideoToGif to generate GIFs that match the exact dimensions you plan.
Disclaimer: This calculator is provided "as is" for informational purposes. Results should be verified for critical applications. We are not responsible for any inaccuracies or issues arising from use of this tool.
Ready to Crop Your Images?
Now that you know the perfect dimensions, use our free image cropper to resize your photos to the exact aspect ratio.
Start Cropping Images