Aspect Ratio & Safe Zone Calculator

Calculate exact aspect ratios, decimals, DPI print scaling, and mobile UI safe zones for Instagram, TikTok, LinkedIn, and Pinterest.

Ratio
4:5
Decimal Ratio
0.80
Platform Compatibility Match
Feed Portrait Post (4:5)
Recommended: 1080 x 1350 px
Interactive Safe Zone Preview Safe Zone Active
4:5
@creator_handle
Safe Content Area
Caption overlay text...
Agency Spec Brief copied to clipboard!
Advanced Settings (Safe Zones & Print Specs) ▼

Instagram Post Aspect Ratio Guide

Get the perfect ratio for every post, reel, or story in seconds. Just enter your width and height, or pick a quick preset like 1:1 Square, 4:5 Portrait, or 9:16 Reel. The tool instantly shows your ratio, decimal ratio, and the closest matching Instagram format with recommended dimensions. Use the Interactive Safe Zone Preview to see exactly how your content will appear, so nothing important gets cut off by UI elements. Works for Instagram, TikTok, LinkedIn, and Pinterest too - helping creators post confidently on every platform.

Instagram Aspect Ratio Calculator

Calculate image aspect ratios, decimals, DPI print dimensions, and UI safe zone overlays across Instagram, TikTok, LinkedIn, and Pinterest. Built for creators, social media managers, and digital marketing agencies.

Standard Social Media Aspect Ratios

Social platforms recommend specific aspect ratios for maximum screen coverage and engagement:

  • Instagram Feed Portrait (4:5): 1080 x 1350 px - occupies the most vertical space in the mobile feed.
  • Reels & TikTok Vertical (9:16): 1080 x 1920 px - full-screen immersive vertical video.
  • Square Post (1:1): 1080 x 1080 px - classic universal social format.
  • LinkedIn / Landscape (1.91:1): 1200 x 627 px - optimal for link preview cards and corporate feed banners.
  • Pinterest Standard Pin (2:3): 1000 x 1500 px - vertical pin format favored by Pinterest discovery algorithms.

Why Safe Zones Matter for Mobile Creators

When uploading vertical video (9:16) or tall portrait posts (4:5), native mobile interfaces overlay icons, comments, and captions directly over your content. Keeping essential headlines, logos, and call-to-action text inside the designated safe zone ensures your message is never blocked by app buttons or user handles.

For guidance on visual hierarchy and high-contrast design, see the W3C Web Accessibility Initiative standards.

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Got questions? Find conversational answers below.

Aspect ratio determines how your content fills a smartphone screen. Using the correct ratio (such as 4:5 for Instagram feed posts or 9:16 for Reels and TikTok) prevents forced cropping, blurry distortion, or unwanted black padding bars.

The Safe Zone is the area inside a 4:5 portrait post or 9:16 Reel that remains visible without getting covered by native app UI elements like usernames, captions, audio titles, or like/share buttons.

Divide pixel dimensions by the DPI resolution (e.g. 300 DPI for high-quality printing). For example, 1080 x 1350 px at 300 DPI equals 3.6 x 4.5 inches.