Calculate Aspect Ratio

Image & Photo Aspect Ratios

Ever take a great photo, but it looks weird or gets cropped when you post it online? The problem is almost always the image aspect ratio!

This guide explains how to get your photo and image sizes right for any platform.

Interactive Image Aspect Ratio Finder

Upload a photo or drag and drop it below to instantly detect its resolution, aspect ratio, and see how it crops on common social platforms.

Drag & drop your image here, or browse files

Why Ratios Matter for Photos

Photographer adjusting camera settings to capture the right image proportions

The aspect ratio is just the shape of your image. It tells you how wide the picture is compared to how tall it is. If the shape of your photo doesn't match the space you're putting it in, two things can happen:

Using an image ratio calculator helps you find the perfect size to avoid these problems.

Common Photo Ratios

While you can have any shape, most photos use one of these standard aspect ratios:

Social Media Image Size Cheat Sheet

Every social media platform has its own preferred shape. To make your posts look their best, use this cheat sheet with the recommended social media aspect ratios.

Name Ratio Example
Instagram Post (Square) 1:1 1080 x 1080 pixels
Instagram Post (Portrait) 4:5 1080 x 1350 pixels
Instagram Post (Tall) 3:4 1080 x 1440 pixels
Instagram Stories Sizes 9:16 1080 x 1920 pixels
Instagram Reels Sizes 9:16 1080 x 1920 pixels
Facebook Feed Photo 4:5 1080 x 1350 pixels
Facebook Stories Sizes 9:16 1080 x 1920 pixels
Pinterest Image Sizes 2:3 1000 x 1500 pixels
Pinterest Story Pins 9:16 1080 x 1920 pixels
Snapchat Image Size 9:16 1080 x 1920 pixels
TikTok Profile Photo 1:1 200 x 200 pixels
TikTok Story Size 9:16 1080 x 1920 pixels
TikTok Carousel Image 9:16 1080 x 1920 pixels
TikTok Ad Image Size 9:16 1080 x 1920 pixels

Aspect Ratios for Social Media

Social media platforms and videos have specific aspect ratios. For instance, Instagram often uses square images (1:1 ratio), while YouTube prefers the 16x9 aspect ratio.

Examples of different aspect ratio formats displayed on screens

Knowing these preferences helps you adjust the image or video to fit perfectly on these platforms.

For videos, the aspect ratio affects how they look. A vertical aspect ratio works better for TikTok, while a widescreen ratio is suitable for YouTube.

Using the right aspect ratio ensures your videos are displayed correctly.

How to Crop and Resize Images

Person using photo editing software to crop an image to correct proportions

Fixing an image's aspect ratio is easy. Just follow these steps:

  1. Know Your Goal: Decide where the image will be posted (e.g., an Instagram Story). Use our cheat sheet to find its ratio (9:16).
  2. Find the Right Size: Use our photo ratio calculator to find the exact pixel dimensions you need.
  3. Crop Carefully: Use any photo editing app to crop your image to the new size. Make sure the most important part of your photo is still in the frame!

By taking a moment to adjust the photo size, you ensure your images look professional and clear everywhere you share them.

AI Upscaling and Aspect Ratios

New AI tools can make small images bigger and clearer. But making an image bigger does not change its aspect ratio. You will still need to crop the image to the right shape for the platform you are posting to.

Think of it like this: AI gives you more dots (pixels), but you still have to cut the picture to fit the frame.