Aspect Ratio Calculator
Calculate proportional dimensions and aspect ratios for images and videos instantly. Free online aspect ratio tool.
Original Image / Video Size
:
New Target Size (Keeps Aspect Ratio)
:
Aspect Ratios
Original Aspect Ratio
16:9
New Aspect Ratio
16:9
If the values match, your image will scale perfectly without stretching or cropping!
What is an Aspect Ratio?
An aspect ratio describes the proportional relationship between the width and height of an image or video screen. For example, modern TVs typically use a `16:9` aspect ratio, meaning for every 16 units of width, there are 9 units of height. This calculator helps you resize images while maintaining perfect proportions to prevent distortion.
Example
A 1920×1080 image (16:9) resized to a new width of 1280px should have a height of exactly 720px to maintain the same proportions without stretching.
Common Use Cases
- Resizing images or video for a specific platform without distortion.
- Finding the correct height when you only know the target width (or vice versa).
FAQs
What are common aspect ratios?
16:9 (widescreen video), 4:3 (older TVs/monitors), 1:1 (square, social media), and 9:16 (vertical/mobile video) are among the most common.