The perfect square format used for Instagram posts, profile pictures, album art, app icons, and more.
Enter any size — for a 1:1 square, width always equals height. Enter one dimension and instantly see the square size.
These are the most widely used square dimensions across social media, design, and development.
| Size | Dimensions | Use Case | Copy |
|---|---|---|---|
| Favicon | 100 × 100 px | Small web icons | |
| Profile thumbnail | 300 × 300 px | Twitter, LinkedIn profile pics | |
| Medium image | 500 × 500 px | General purpose, email | |
| YouTube / Spotify | 800 × 800 px | YouTube profile, Spotify album art | |
| General use | 1000 × 1000 px | Product photos, content creation | |
| Instagram Post Most popular | 1080 × 1080 px | Instagram feed, Facebook, LinkedIn | |
| Album art (print) | 3000 × 3000 px | Music streaming, physical CDs |
A 1:1 aspect ratio simply means width equals height — a perfect square. Unlike rectangular ratios, a square has equal dimensions in both axes, giving it a balanced, symmetrical quality. The ratio is 1.0:1.0 (or just 1), and any square image satisfies it regardless of actual pixel dimensions — 100×100, 500×500, or 2000×2000 are all 1:1.
Instagram was originally built entirely around 1:1 square posts — the square format was core to its aesthetic from 2010 until 2015 when portrait and landscape support was added. The classic 1:1 format remains popular because it displays consistently across every platform without cropping. A 1080×1080 px image works on Instagram, Facebook, Twitter (now X), LinkedIn, and Pinterest with no adjustments needed.
Nearly all social media platforms use 1:1 square images for profile pictures — then display them as circles. Common upload sizes: Facebook (360×360 px minimum), Twitter/X (400×400 px), LinkedIn (400×400 px), YouTube (800×800 px), TikTok (200×200 px). Upload at the largest recommended size for sharpest quality — profiles are stored at the upload resolution even if displayed smaller.
App icons are always square (1:1). iOS App Store requires 1024×1024 px; device display sizes range from 180×180 px (iPhone home screen) to 60×60 px (spotlight). Android Play Store requires 512×512 px. PWA (Progressive Web App) icons use 192×192 and 512×512 px. Keeping your icon at 1:1 ensures it displays correctly at every size the system uses.
Music streaming platforms — Spotify, Apple Music, Tidal, Amazon Music — all use square album artwork. Streaming services require 3000×3000 px minimum at 72 DPI for digital release. Physical CD inserts traditionally used 4.72×4.72 inches (at 300 DPI: 1416×1416 px). The square format in album art dates back to the physical 12-inch vinyl LP era, where the square sleeve became iconic in music culture.