🖥️ Aspect Ratio Calculator
Calculate width and height from any aspect ratio
How Aspect Ratio Calculation Works
Formula
Height = Width / (Ratio Width / Ratio Height)
- 1Enter the aspect ratio (e.g., 16:9) or two dimensions.
- 2If you provide width, the calculator finds the matching height.
- 3If you provide both dimensions, it determines the aspect ratio.
- 4The ratio is simplified to its lowest terms (e.g., 1920×1080 = 16:9).
- 5Common presets for video, photo, and screen formats are available.
About Aspect Ratio Calculator
Calculate and convert aspect ratios for images, videos, and screens. Find width or height from any ratio. Supports 16:9, 4:3, 21:9, and custom ratios with pixel dimensions.
Frequently Asked Questions
What is 16:9 aspect ratio?
16:9 is the standard widescreen format used by most monitors, TVs, and YouTube videos. Common resolutions include 1920×1080 (Full HD), 2560×1440 (2K), and 3840×2160 (4K).
What aspect ratio is best for social media?
Instagram posts: 1:1 (square) or 4:5. Instagram Stories and TikTok: 9:16 (vertical). YouTube: 16:9. Facebook: 1.91:1 for link previews. Twitter: 16:9 or 2:1.
How do I find the aspect ratio of an image?
Divide width by height, then simplify the fraction. For example, 1920÷1080 = 1.778, which is 16/9. Or find the GCD: GCD(1920,1080) = 120, so 1920/120 : 1080/120 = 16:9.