Aspect Ratio Calculator
Calculate aspect ratios for images & videos
📐 Enter Dimensions
🔄 Resize (Keep Ratio)
Result: 1280 × 720 px
📏 Common Aspect Ratios
📱 Social Media Formats
16:9
HD Video, YouTube
📊 Statistics
🖨️ Print Size (Inches)
How to Calculate Aspect Ratios
- Enter your original width and height dimensions
- Or select a preset (16:9, 4:3, 1:1, etc.)
- Lock either width or height for resizing
- Enter the new dimension - the other calculates automatically
- View the aspect ratio and use presets for common formats
Frequently Asked Questions
What is aspect ratio?
Aspect ratio is the proportional relationship between width and height. 16:9 means for every 16 units of width, there are 9 units of height. Common ratios: 16:9 (video), 4:3 (old TV), 1:1 (square).
What aspect ratio should I use for social media?
Instagram: 1:1 (feed), 4:5 (portrait), 9:16 (stories). Facebook: 1.91:1 (link preview), 1:1 (feed). Twitter: 16:9 (landscape). YouTube: 16:9 (standard).
How do I resize without distortion?
Lock the aspect ratio, then change only width OR height. The calculator automatically adjusts the other dimension to maintain proportions.
What's the best aspect ratio for video?
16:9 is standard for YouTube, TV, and most video platforms. 9:16 for vertical video (TikTok, Reels). 2.35:1 or 2.39:1 for cinematic widescreen.
How do I calculate print dimensions?
For print, consider DPI (dots per inch). At 300 DPI: a 1920×1080 image prints at 6.4×3.6 inches. The calculator shows print sizes at common DPI values.
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