📐 Aspect Ratio Calculator
Convert between ratios and calculate perfect dimensions for any project
Aspect ratio is the proportional relationship between width and height. Getting it right is crucial for video production, graphic design, and social media. The wrong aspect ratio can mean letterboxing, cropping, or distorted images .
🎯 Use this calculator to find the perfect dimensions for any project. Enter a ratio and one dimension to calculate the other, or explore common ratios for YouTube, Instagram, TikTok, and more.
⚙️ Aspect Ratio Settings
16:9
HD Video
4:3
Standard
1:1
Square
9:16
Vertical Video
21:9
Ultrawide
3:2
Photo
2.35:1
CinemaScope
5:4
Medium Format
📋 Dimension Results
📐 Aspect Ratio
16:9
HD Video / YouTube Standard
🌅 Landscape
From Width
Width
1920
px
→
Height
1080
px
From Height
Height
1080
px
→
Width
1920
px
📊 Dimension Comparison
Width
Height
Visual representation of width vs height at current ratio
🔥 Popular Dimensions for 16:9
📚 Aspect Ratio Guide
16:9 - The Universal Standard
The most common aspect ratio for HD video, YouTube, and modern displays. 1920×1080 (Full HD) and 3840×2160 (4K) both use 16:9. Perfect for widescreen content that fills most screens .
9:16 - Vertical Video
The standard for TikTok, Instagram Stories, and YouTube Shorts. Optimized for mobile viewing with full-screen portrait orientation. Dimensions: 1080×1920 for most platforms .
4:3 - Classic Photography
Traditional TV and photography standard. Still used in some digital cameras and iPad displays. 1024×768, 2048×1536 are common resolutions .
21:9 - Cinematic Ultrawide
Theatrical and ultrawide monitor format. Creates a cinematic letterboxed look. Common resolutions: 2560×1080, 3440×1440. Great for immersive viewing experiences .
1:1 - Square Format
Perfect for Instagram feed posts and profile pictures. Square images are versatile and display consistently across platforms. Common size: 1080×1080 pixels .
3:2 - DSLR Photography
Standard for many DSLR cameras and photo prints. Offers a slight crop compared to 4:3, creating more width. Common print sizes: 6×4 inches, 12×8 inches .
✨ Platform-Specific Examples
YouTube
16:9 Thumbnail
1280×720 (HD) or 1920×1080
Instagram
Square Post
1080×1080 pixels (1:1)
TikTok
Vertical Video
1080×1920 (9:16)
Facebook
Cover Photo
851×315 pixels (~2.7:1)
Twitter
Header Image
1500×500 pixels (3:1)
LinkedIn
Cover Photo
1584×396 pixels (4:1)