Image Aspect Ratio Detector
Instantly calculate the exact aspect ratio of any image or screen dimension. Perfect for ensuring your videos and photos fit social media requirements.
Eliminate Black Bars & Cropping
Uploading a 4:3 photo to a 16:9 video timeline results in ugly black bars on the sides. Uploading a 16:9 photo to Instagram results in it getting cropped. This tool instantly analyzes your uploaded image (or manual pixel inputs) and outputs the exact simplified aspect ratio (like 16:9, 4:3, or 1:1), so you know exactly how it will display on different platforms.
Why Use Our Aspect Ratio Detector?
- Fraction Simplification: Automatically reduces pixel dimensions (e.g., 1920x1080) to their simplest ratio (16:9).
- Social Media Matching: Checks if your image matches standard platform requirements.
- Manual Input Mode: Calculate the ratio of a physical screen or billboard.
- Offline Processing: No image uploads necessary.
How to Use the Aspect Ratio Detector
Upload an image, OR type the Width and Height manually.
Click 'Calculate Ratio'.
View the simplified aspect ratio.
Compare it against our chart of common social media sizes.
Frequently Asked Questions
Instagram prefers 1:1 (Square) or 4:5 (Vertical Portrait) for posts, and 9:16 for Stories/Reels.
Some film industries use decimal ratios instead of fractions. 1.77:1 is the exact same thing as 16:9 (because 16 divided by 9 is 1.77).
All file processing is performed locally in your web browser. We do not upload, store, or view your data.