1:1 to Pixels
1:1 is a perfect square — the default for Instagram feed posts, profile pictures and most AI image generators. Get exact pixel dimensions below.
--ar 1:1
AI generation sizes
Wallpaper sizes
Print sizes (300 DPI)
Social media sizes reference
Sizes used across major platforms, for context when picking your ratio:
| Platform & placement | Recommended size | Ratio |
|---|---|---|
| Instagram feed post (square) | 1080 × 1080 | 1:1 |
| Instagram portrait post | 1080 × 1350 | 4:5 |
| Instagram / TikTok Story or Reel | 1080 × 1920 | 9:16 |
| YouTube thumbnail | 1280 × 720 | 16:9 |
| Facebook shared image | 1200 × 630 | 1.91:1 |
| X (Twitter) post image | 1600 × 900 | 16:9 |
| LinkedIn post image | 1200 × 627 | 1.91:1 |
| Pinterest Pin | 1000 × 1500 | 2:3 |
How the 1:1 to Pixels works
Choose a ratio
Pick a common preset like 16:9 or 1:1, or type in any custom width and height.
Toggle orientation
Switch between landscape and portrait to flip the ratio instantly.
Copy dimensions or --ar
Grab the exact pixel dimensions from the tables, or copy the ready-made Midjourney --ar parameter.
About this tool
1:1 (square) is the most flexible aspect ratio for AI-generated art since it's the native default for most models, and it works cleanly for Instagram feed posts, profile pictures, and album/product thumbnails.
The most common 1:1 export size is 1080×1080 for Instagram, though AI generators typically default to smaller native sizes like 1024×1024 before any upscaling step.
Because a square crops evenly on both axes, it's also the safest starting ratio if you plan to crop the same image down into 16:9 or 9:16 versions afterward.
Frequently asked questions
What size is a 1:1 square image?
1080×1080 pixels is the standard size for Instagram square posts; 1024×1024 is a common native output size for many AI image generators.
Other aspect ratio tools
Writing the prompt itself? Try the Prompt Character Counter →