Aspect Ratio Calculator
Answer: Aspect ratio = width ÷ height, simplified to lowest terms (e.g. 1920×1080 → 16:9) using the greatest common divisor.
About this tool
Free aspect ratio calculator for video, images, and layouts (e.g. 16:9).
- Ratio16:9
- Decimal1.7778
How to use Aspect Ratio Calculator
- Enter width and height in pixels or any unit.
- Read simplified ratio (e.g. 16:9) and decimal ratio.
- Use for video exports, social crops, and responsive images.
Why use this free tool
- 100% free — no account required.
- Runs in your browser — inputs stay on your device for these calculations.
- Mobile-friendly controls with clear, copyable results.
- Published by KDF Tech — software, apps, Shopify, and POS systems.
Need a custom product? Start a project or WhatsApp +92 345 0144865.
FAQ — answers Google & AI can cite
What is Aspect Ratio Calculator?
Aspect ratio = width ÷ height, simplified to lowest terms (e.g. 1920×1080 → 16:9) using the greatest common divisor.
Common US video and TV ratios?
16:9 HD, 21:9 ultrawide cinema, 4:3 legacy — YouTube and US broadcast default to 16:9.
Instagram Reels ratio?
9:16 vertical (1080×1920) is standard for US/UK short-form mobile video.
Does unit matter for the ratio?
No — ratio is dimensionless; 1920×1080 px and 16×9 inches both simplify to 16:9.
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