Image & Video Aspect Ratio Calculator
Use our image aspect ratio calculator and video aspect ratio calculator to instantly detect resolution, aspect ratio, and orientation. Find the best Instagram aspect ratio, TikTok aspect ratio, and platform-friendly formats for any media.
Choose Media to Analyze
Upload an image or video to instantly detect its specs. Files stay private on your device.
Privacy: Your files are analyzed locally and never uploaded to our servers.
Analyzing media...
Device Visualization
Visualizing how your media fits into standard device screens.
Optimal Platform Recommendations
Green indicators show a direct match for your media's aspect ratio.
Instagram Square
1080×1080 • 1:1
Instagram Portrait
1080×1350 • 4:5
Instagram Stories/Reels
1080×1920 • 9:16
TikTok Video
1080×1920 • 9:16
YouTube Video
1920×1080 • 16:9
YouTube Thumbnail
1280×720 • 16:9
YouTube Shorts
1080×1920 • 9:16
Pinterest Pin
1000×1500 • 2:3
Facebook Feed
1080×1350 • 4:5
What is a media aspect ratio?
At its core, an aspect ratio is a simple way of describing the shape of a frame. Whether you're looking at a classic photograph, a cinematic movie, or a viral TikTok, the relationship between the width and the height defines the "feel" of the content.
For creators, understanding these ratios is crucial. A cinematic 2.39:1 widescreen shot feels epic and grand, while a 9:16 vertical video feels personal and immediate on a mobile screen.
Aspect Ratio vs. Resolution
It's a common mistake to use these terms interchangeably. Resolution tells you how many pixels are in the image (the detail level), while Aspect Ratio tells you the shape.
Think of it like a window: the aspect ratio is the shape of the window frame, and the resolution is how clean the glass is. You can have a very large 4K window or a small 720p window, but if they are both 16:9, they have the same shape.
Why do images get cropped or stretched?
Ratio Mismatch
When you upload a 16:9 photo to a 1:1 Instagram post, the platform must choose between adding "letterbox" bars or cropping the edges.
Auto-Fitting
Many modern apps "stretch-to-fill" to ensure no black bars appear, which can distort your subject or cut off important text and faces.
Safe Zones
Platforms like TikTok have "safe zones" where UI elements (buttons, captions) overlap your video. Even with the right ratio, your content might be obscured.
Best Ratios for Content Creators
Choosing the right format can significantly impact your engagement and reach.
The Rise of Vertical (9:16)
TikTok, Instagram Reels, and YouTube Shorts have made 9:16 the most important ratio for mobile engagement. Vertical video works because it eliminates distractions and fills the user's entire field of vision on a phone.
The Widescreen Standard (16:9)
16:9 remains the king for long-form content, YouTube, and television. It matches the natural horizontal field of view of human eyes, making it the best choice for storytelling, gaming, and cinematic experiences.
Quick Ratio Guide for Creators
Actionable advice for choosing the right format for any project.
Mobile-First
Essential for TikTok, Reels, and Shorts. Always shoot vertically for these platforms.
Widescreen
The standard for YouTube, Netflix, and TV. Use this for storytelling and deep dives.
IG Portrait
Takes up more screen real estate than 1:1, leading to higher engagement on feeds.
The golden ratio for pins. Vertical pins get saved and clicked much more often.
Choose Preview Type
Visualize how these ratios fit on different device screens.
Desktop Ratio Reference (16:9 Monitor)
1:1
Square
Resolution: 1080 × 1080
Use Case: Instagram posts, Profile images
4:5
Portrait
Resolution: 1080 × 1350
Use Case: Instagram portrait posts
9:16
Vertical
Resolution: 1080 × 1920
Use Case: Reels, TikTok, Shorts, Stories
16:9
Widescreen
Resolution: 1920 × 1080
Use Case: YouTube videos, Thumbnails
3:2
Photography
Resolution: 3000 × 2000
Use Case: DSLR photos, Photo prints
4:3
Standard
Resolution: 1600 × 1200
Use Case: Classic displays, Presentations
2:3
Resolution: 1000 × 1500
Use Case: Pinterest pins, Blog graphics
Mobile Ratio Reference (9:16 Phone)
1:1
Square
Resolution: 1080 × 1080
Use Case: Instagram posts, Profile images
4:5
Portrait
Resolution: 1080 × 1350
Use Case: Instagram portrait posts
9:16
Vertical
Resolution: 1080 × 1920
Use Case: Reels, TikTok, Shorts, Stories
16:9
Widescreen
Resolution: 1920 × 1080
Use Case: YouTube videos, Thumbnails
3:2
Photography
Resolution: 3000 × 2000
Use Case: DSLR photos, Photo prints
4:3
Standard
Resolution: 1600 × 1200
Use Case: Classic displays, Presentations
2:3
Resolution: 1000 × 1500
Use Case: Pinterest pins, Blog graphics
Frequently Asked Questions
Everything you need to know about media aspect ratios.
What is a media aspect ratio?
Media aspect ratio is the proportional relationship between the width and height of an image or video. It's usually expressed as two numbers separated by a colon, like 16:9 for widescreen video or 1:1 for square social media posts.
Is aspect ratio the same as resolution?
No. Resolution refers to the total number of pixels (e.g., 1920x1080), while aspect ratio describes the shape (16:9). Multiple resolutions can share the same aspect ratio; for example, both 1280x720 and 1920x1080 are 16:9.
Can this tool detect video aspect ratio?
Yes, our analyzer supports common video formats like MP4, WebM, and MOV. It extracts the frame dimensions and duration locally in your browser to calculate the ratio.
Are uploaded images or videos stored?
Absolutely not. Your files are processed entirely within your web browser using JavaScript. Nothing is ever uploaded to our servers, ensuring your privacy and security.
Why does my image get cropped on Instagram?
Instagram has specific supported aspect ratios (1:1, 4:5, 1.91:1). If your image doesn't match these, Instagram will crop or pad it to fit. Using our analyzer helps you ensure your media is in the right format before you post.
What is the best aspect ratio for YouTube?
The standard aspect ratio for YouTube is 16:9. For YouTube Shorts, the recommended ratio is 9:16 (vertical).
What is the best aspect ratio for TikTok, Reels, and Shorts?
All three platforms are designed for mobile-first viewing and prefer a 9:16 aspect ratio (1080x1920 pixels).
Can I resize media without changing the aspect ratio?
Yes, resizing involves changing the resolution while keeping the same width-to-height ratio. For example, downscaling a 4K (3840x2160) video to 1080p (1920x1080) maintains the 16:9 ratio.
Why is 9:16 popular for mobile videos?
Most people hold their smartphones vertically. 9:16 fills the entire screen in this orientation, providing a more immersive and engaging experience for users on platforms like TikTok and Instagram.
Does this tool work on mobile browsers?
Yes! The Media Ratio Analyzer is fully responsive and works on Chrome, Safari, and other modern browsers on both iOS and Android devices.