What is 4:5 aspect ratio?

4:5 is a vertical aspect ratio where for every 4 units of width, there are 5 units of height. It's Instagram's recommended format for feed posts, offering a portrait orientation that maximizes screen space on mobile devices. This ratio creates visually appealing content that takes up more vertical real estate than square 1:1 posts, leading to better engagement and visibility in social media feeds.

What resolution is 4:5 for Instagram?

The optimal 4:5 resolution for Instagram is 1080×1350 pixels, which is Instagram's recommended size for portrait feed posts. Other common 4:5 resolutions include 1440×1800 (higher quality), 800×1000 (smaller files), and 2160×2700 (maximum quality). The 1080×1350 format provides the best balance between image quality, file size, and display performance across all devices.

How do I calculate 4:5 dimensions?

To find height from width: divide width by 4 and multiply by 5 (height = width × 5 ÷ 4). To find width from height: divide height by 5 and multiply by 4 (width = height × 4 ÷ 5). Our calculator above performs these calculations instantly, ensuring your Instagram portrait content maintains perfect 4:5 proportions for optimal feed display.

Why use 4:5 instead of 1:1 on Instagram?

4:5 format provides approximately 78% more screen space than 1:1 square posts on mobile devices, the primary way users browse Instagram. This increased visibility typically leads to higher engagement rates, more likes, better comments, and improved overall performance. While square posts work well, portrait 4:5 posts dominate the feed, capture more attention, and feel more natural in today's vertical-scrolling social media environment.

What is the difference between 4:5 and 9:16?

4:5 (1080×1350) is the standard for Instagram feed posts and general portrait content, offering a moderate vertical format. 9:16 (1080×1920) is designed for full-screen vertical video like Instagram Reels, Stories, TikTok, and YouTube Shorts. Use 4:5 for static posts and carousel images in your Instagram feed, and 9:16 for immersive full-screen vertical video content. Both formats work on mobile, but serve different content types and platform features.

Can I use 4:5 aspect ratio for other social media platforms?

Yes, the 4:5 aspect ratio works well across multiple platforms. Pinterest recommends 2:3 or taller for pins, but 4:5 works effectively. Facebook supports 4:5 for feed posts and ads. LinkedIn accepts 4:5 for company updates and personal posts. Many advertising platforms including Facebook Ads, Instagram Ads, and LinkedIn Ads optimize for 4:5 portrait content. The format has become a versatile standard for portrait-oriented social media content beyond just Instagram.

4:5 Calculator

Quickly convert between width and height while maintaining 4:5 ratio

4:5

Instagram portrait standard

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Portrait Posts

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4:5 CALCULATOR

4:5 Aspect Ratio Calculator

This specialized calculator is designed for the 4:5 aspect ratio, the optimal format for Instagram portrait posts and social media marketing. Enter either width or height to get the corresponding dimension while maintaining the perfect 4:5 portrait proportion.

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4:5

Calculate Height from Width

Width

Height

Using the standard 4:5 ratio, the exact calculated height is 1350 pixels

Common 4:5 Resolutions

Quick access to standard 4:5 resolutions used in Instagram posts, social media content, and digital marketing.

About 4:5 Ratio

Understanding the Instagram portrait aspect ratio.

The 4:5 aspect ratio has become the standard for Instagram portrait posts and social media marketing. Discover why this vertical format maximizes engagement and how to use it effectively in your content strategy.

Instagram Standard The 4:5 aspect ratio is Instagram's recommended format for feed posts, providing optimal visibility without excessive cropping. This portrait orientation takes up more vertical screen space than square posts, increasing engagement and visibility in the Instagram feed while maintaining professional composition.

Marketing Advantage Social media marketers prefer 4:5 format because it occupies approximately 78% more screen real estate than 1:1 square posts on mobile devices. This increased visibility leads to higher engagement rates, better brand recall, and improved content performance. The format works perfectly for product showcases, lifestyle content, and promotional materials.

Versatile Application Beyond Instagram, the 4:5 aspect ratio works well for Pinterest pins, Facebook posts, carousel ads, and various digital marketing materials. The portrait orientation feels natural on mobile devices while providing enough width to avoid extreme narrowness. It strikes the perfect balance between vertical space and composition flexibility.

Content Creator Essential Content creators, influencers, and brands rely on 4:5 format for maximum Instagram feed impact. Whether shooting with a smartphone, designing graphics, or editing photos, understanding 4:5 dimensions ensures your content displays beautifully on Instagram and other social platforms. The format maintains image quality while optimizing for mobile-first consumption.

Popular 4:5 Resolutions

Resolution Name	Width × Height	Common Usage
Small Portrait	800 × 1000	Quick posts, compressed images
Instagram Standard	1080 × 1350	Instagram feed posts, carousel images
High Quality	1440 × 1800	Premium content, professional photos
Maximum Quality	2160 × 2700	Print-ready, highest quality content
Facebook Portrait	1080 × 1350	Facebook feed posts and ads
Pinterest Pin	1000 × 1250	Pinterest vertical pins

What is the 4:5 Aspect Ratio?

The 4:5 aspect ratio (pronounced "four to five" or "four by five") represents a vertical proportional relationship between an image's width and height. In a 4:5 ratio, for every 4 units of width, there are 5 units of height, creating a portrait orientation that perfectly balances vertical space with compositional flexibility.

This portrait format is the industry standard for:

Instagram feed posts and portrait images
Instagram carousel posts
Social media marketing content
Facebook feed posts
Pinterest pins and vertical graphics
Digital advertising and promotional materials
Mobile-optimized visual content

Why Choose 4:5 Format for Instagram?

The 4:5 aspect ratio offers significant advantages for social media marketing and Instagram content:

Maximum feed visibility: Takes up approximately 78% more screen space than square 1:1 posts on mobile devices, making your content impossible to miss as users scroll through their Instagram feed
Higher engagement rates: Studies show portrait-oriented posts (4:5) typically receive better engagement metrics than square posts, including more likes, comments, saves, and shares
Instagram recommended format: This is Instagram's officially recommended aspect ratio for feed posts, ensuring optimal display without cropping or quality loss across all devices and screen sizes
Mobile-first optimization: Perfectly suited for how users actually consume content on smartphones, the primary platform for Instagram browsing and engagement
Marketing effectiveness: Brands and marketers report better campaign performance, improved brand awareness, and higher conversion rates when using 4:5 format for Instagram ads and organic posts

Converting to 4:5 Dimensions

When creating or resizing content for 4:5 format, maintaining the correct aspect ratio ensures professional, platform-optimized results. The conversion formulas are:

To find height: width ÷ 4 × 5
To find width: height ÷ 5 × 4

Our 4:5 aspect ratio calculator handles these calculations instantly, providing accurate dimensions for any starting measurement. This ensures your Instagram portrait content maintains perfect proportions and displays beautifully across all platforms and devices.

Working with 4:5 Resolution for Instagram

Creating effective 4:5 content requires understanding platform specifications and industry best practices:

Instagram specifications: The optimal resolution for Instagram feed posts is 1080×1350 pixels. Instagram supports up to 1080 pixels width, making this the sweet spot for quality and file size. Higher resolutions like 2160×2700 work but will be compressed to 1080 width.
Content composition: When designing or shooting for 4:5, consider vertical composition principles. Important elements, text, and focal points should be positioned thoughtfully within the portrait frame. The format provides enough width to avoid cramped compositions while maximizing vertical presence.
Comparison with other formats: Unlike 1:1 square posts, 4:5 takes up more feed real estate. Compared to 9:16 full-screen vertical, 4:5 is less extreme and works better for static feed content rather than Stories or Reels.
Cross-platform usage: While optimized for Instagram, 4:5 also works well for Facebook posts, Pinterest pins, and various advertising platforms. This versatility makes it an efficient choice for content creators managing multiple social media channels.
File optimization: Keep file sizes under 30MB for Instagram uploads, though smaller files (under 8MB) upload faster and maintain quality. Use JPEG format for photos with 80-90% quality settings for optimal balance between file size and visual quality.

Our calculator simplifies the process of determining exact pixel dimensions that maintain the 4:5 aspect ratio, whether you're creating content for Instagram, Facebook, Pinterest, or advertising campaigns. For traditional square content, see our general aspect ratio calculator. For full-screen vertical video, check our 9:16 calculator for Stories and Reels.