Free Aspect Ratio Calculator
Calculate aspect ratios instantly with Teamcamp's free tool. Convert pixels to simplified ratios, use our 16:9 aspect ratio calculator and 4:3 aspect ratio converter, plus find exact dimensions with quick presets.
Quick presets
Keyboard-friendly: all inputs accept numbers; ratio simplify keeps integers tidy.
What is an Aspect Ratio?
Think of aspect ratio as the width-to-height proportion that defines the shape of your image.
For example:
16:9 = widescreen format, common on YouTube.
1:1 = equal width and height
4:3 means 4 units wide for every 3 units tall (like older TV shows)
Getting the right aspect ratio keeps your images looking sharp and prevents weird stretching or black bars.
How to Use the Tool
Pixels → Ratio Mode
Enter your current width and height in pixels using our aspect ratio calculator pixels feature. Get instant simplified ratios, decimal values, and copy any result with one click.
Example: Enter 1920 × 1080 → Get 16:9 ratio instantly
Ratio → Pixels Mode
Set your desired ratio, choose whether you know the width or height, and our dimension calculator finds the missing dimension automatically.
Example: Set 16:9 ratio, enter width 1600 → Get height 900
Key Features
Smart Ratio Simplification - Complex dimensions become clean ratios instantly
One-Click Copy - Save any result to clipboard
Quick Presets - 1:1, 3:2, 16:9, 21:9, 9:16 buttons
Dual Options – Convert pixels into ratios or ratios into pixels.
Professional Interface - Clean, keyboard-friendly design
Common Aspect Ratios & Uses
16:9 (Widescreen)
Perfect for YouTube, modern TVs, presentations
Dimensions: 1920×1080, 1280×720, 3840×2160
4:3 (Traditional)
Perfect for classic photography, older formats, presentations
Dimensions: 1024×768, 1600×1200, 2048×1536
1:1 (Square)
Perfect for Instagram posts, profile pictures, logos
Dimensions: 1080×1080, 2000×2000, 3000×3000
9:16 (Vertical Mobile)
Perfect for Instagram Stories, TikTok videos, mobile content
Dimensions: 1080×1920, 720×1280, 1440×2560
Platform-Specific Dimensions
Instagram: Feed posts (1080×1080), Stories (1080×1920), Reels (1080×1920)
YouTube: Videos (1920×1080), Thumbnails (1280×720), Shorts (1080×1920)
Facebook: Posts (1200×630), Cover (1640×859), Stories (1080×1920)
TikTok: Videos (1080×1920), optimal for mobile viewing
Pro Tips for Better Results
Working with Unusual Ratios
Got dimensions like 1366×768? Our screen ratio calculator simplifies this to approximately 16:9. Use decimal output (1.779) for precise CSS work.
Choose the Right Mode
Use Pixels → Ratio when analyzing existing content. Use Ratio → Pixels when creating new content for specific platforms.
Copy Strategy
Copy simplified ratios for documentation, decimal values for code, and exact pixels for design software.
Why Use Our Tool?
Prevent Image Distortion - Proper calculations maintain visual quality
Save Time - Instant results vs manual math
Professional Results - Perfect dimensions for any platform
Multiple Outputs - Get ratios, decimals, and pixels simultaneously
Frequently Asked Questions
What is the difference between the two modes?
Pixels → Ratio shows simplified ratios from your dimensions. Ratio → Pixels finds missing dimensions using our aspect ratio converter.
Can I use this for print dimensions?
Yes! Works seamlessly with pixels, inches, and centimeters. A 8×10 inch print has the same ratio as 800×1000 pixels.
Why do I get decimal values?
Decimal ratios (like 1.777778 for 16:9) are essential for CSS, programming, and when you calculate aspect ratio for technical applications.
What does the Simplify button do?
Reduces complex ratios to lowest terms. Example: 32:18 becomes 16:9, making ratios easier to understand and communicate.
Get Started Now
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Instant calculations with precise results
Professional dimensions for any platform
Copy-friendly outputs for immediate use
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Start calculating above - Enter your dimensions above and get instant, accurate aspect ratios.