Instagram Post Size
Feed portrait maxes at 1080x1350 (4:5) - taller than that is cropped. Square is 1080x1080 (1:1), Stories and Reels are 1080x1920 (9:16). Pick the ratio below and copy the exact pair.
:
1920 × 2400
Exact ratio: 4:5 · CSS: aspect-ratio: 4 / 5 · padding-top fallback: 125.00%
Feed sizes
| Placement | Size | Ratio |
|---|---|---|
| Feed portrait (max tall) | 1080x1350 | 4:5 |
| Feed square | 1080x1080 | 1:1 |
| Feed landscape | 1080x566 | 1.91:1 |
| Story / Reel | 1080x1920 | 9:16 |
Crop rules
- Feed feed caps at 4:5 - upload 1080x1350 exactly for max tall, or 1080x1080 for square.
- Taller than 4:5 (e.g. 9:16) in feed gets cropped top/bottom to 4:5 - letterbox intentionally if you must show vertical in feed.
- Profile grid crops any feed post to 1:1 square preview - center key subject.
Other ratios for this page
Switch the tool to the ratio you need - 1:1 for square, 9:16 for Stories/Reels:
- 4:5 portrait calculator
- 1:1 square calculator
- 9:16 vertical calculator
- What ratio is 1080x1350?
- TikTok video size (same 9:16)
- CSS aspect-ratio guide
Tip: master at 1080 for feed - halved 540 proxies stay sharp enough for grid. Do not upscale 1080 to 4K for Instagram; it recompresses anyway.