Resolution reference
1080 × 1350 resolution (4:5 portrait)
Short answer
1080 × 1350 (4:5 portrait, Instagram portrait size) is a 4:5 portrait resolution with 1,458,000 pixels (1.46 megapixels). The tallest shape a standard feed post can claim before becoming a Reel.
Key takeaways
- 1080 × 1350 is 4:5, portrait, 1,458,000 pixels (1.46 MP).
- The tallest shape a standard feed post can claim before becoming a Reel.
- For video, YouTube's 1080p tier applies: 8 Mbps at 24-30 fps, about 60 MB a minute.
- Printed at 300 DPI it is 3.6 × 4.5 inches.
1080 × 1350 specifications
| Width × height | 1,080 × 1,350 pixels |
|---|---|
| Also called | 1080x1350, 4:5 portrait, Instagram portrait size |
| Aspect ratio | 4:5, decimal 0.8000 |
| Orientation | portrait |
| Total pixels | 1,458,000 (1.46 megapixels) |
| Compared with 1080p | 0.70× the pixels of 1920 × 1080 |
| Diagonal | 1,729 pixels |
| Rotated | 1350 × 1080 |
| Encoder safe | Yes: both sides are even, as H.264 and HEVC with 4:2:0 color require |
1080 × 1350 compared with common resolutions
| Resolution | Pixels | 1080 × 1350 has |
|---|---|---|
| 720p (1280 × 720) | 921,600 | 1.58× as many |
| 1080p (1920 × 1080) | 2,073,600 | 70% as many |
| 1440p (2560 × 1440) | 3,686,400 | 40% as many |
| 4K UHD (3840 × 2160) | 8,294,400 | 18% as many |
1080 × 1350 vs 1366 × 768 and 1080 × 1350 vs 1920 × 1080
1080 × 1350 has 39% more pixels than 1366 × 768 (1366 × 768). On a 6.7-inch phone that is 258 vs 234 pixels per inch, so text and fine detail look sharper at 1080 × 1350. A game or encoder has to process 1.39× as many pixels per frame, which costs frame rate on the same graphics card and, at equal quality, file size.
1080p (1920 × 1080) has 42% more pixels than 1080 × 1350. On a 6.7-inch phone that is 258 vs 329 pixels per inch, so text and fine detail look softer at 1080 × 1350. A game or encoder processes only 70% as many pixels per frame, which helps frame rates and keeps files smaller.
| 1080 × 1350 | 1366 × 768 (1366 × 768) | 1080p (1920 × 1080) | |
|---|---|---|---|
| Pixels | 1,458,000 | 1,049,088 | 2,073,600 |
| Aspect ratio | 4:5 | 683:384 | 16:9 |
| YouTube bitrate, 24-30 fps | 8 Mbps | 5 Mbps | 8 Mbps |
| Desktop space (vs 1080p) | 70% | 51% | 100% |
Where 1080 × 1350 is used
Instagram added portrait and landscape posts in August 2015, after five years of square-only photos. Portrait posts were capped at 4:5, and 1080 × 1350 became the standard size because it is the tallest frame the feed shows without cropping.
- The tallest standard feed post on Instagram: Instagram shares portrait photos at 1080 × 1350 (4:5).
- Facebook and LinkedIn feed posts, where 4:5 fills more of a phone screen than square.
- Feed video that should take up as much screen as possible without becoming a full-screen Reel.
Platforms that target this exact frame:Instagram Feed
Pixel density (PPI) by screen size
Pixel density is the diagonal in pixels (1,729) divided by the screen diagonal in inches. The last column is the distance at which a person with normal vision stops seeing individual pixels (one arcminute of visual acuity).
| Screen diagonal | PPI | Pixels blend at about |
|---|---|---|
| 6.1 inches | 283 | 12 in (31 cm) |
| 6.3 inches | 274 | 13 in (32 cm) |
| 6.7 inches | 258 | 13 in (34 cm) |
| 6.9 inches | 251 | 14 in (35 cm) |
Print sizes for a 1080 × 1350 image
| Print resolution | Inches | Centimeters | Good for |
|---|---|---|---|
| 300 DPI | 3.6 × 4.5 | 9.1 × 11.4 | Photo prints, magazines |
| 240 DPI | 4.5 × 5.6 | 11.4 × 14.3 | Inkjet photo prints |
| 150 DPI | 7.2 × 9.0 | 18.3 × 22.9 | Posters seen from a meter or more |
| 72 DPI | 15.0 × 18.8 | 38.1 × 47.6 | Screen only; too coarse for print |
Free tool:DPI and print size calculator
Video at 1080 × 1350: bitrate and file size
| Frame rate | Bitrate | Per minute | Per 10 minutes |
|---|---|---|---|
| 24-30 fps | 8 Mbps | about 60 MB | about 600 MB |
| 48-60 fps | 12 Mbps | about 90 MB | about 900 MB |
Uncompressed, one 1080 × 1350 frame is 4.4 MB as 8-bit RGB, or 2.2 MB in the 8-bit 4:2:0 format video codecs work in. At 30 fps that is 525 Mbps of raw video, which is why every delivery format compresses it.
Posting 1080 × 1350 to social platforms
How the frame lands in each common shape, either fitted whole with bars or scaled up to fill and cropped:
| Target frame | Fit with bars | Fill and crop |
|---|---|---|
| 9:16 (TikTok, Reels, Shorts), 1080 × 1920 | 1080 × 1350 picture, 30% of the frame is bars | Keeps 70% of the picture (crops the width) |
| 16:9 (YouTube), 1920 × 1080 | 864 × 1080 picture, 55% of the frame is bars | Keeps 45% of the picture (crops the height) |
| 4:5 (feed portrait), 1080 × 1350 | Fills exactly | No crop needed |
| 1:1 (square), 1080 × 1080 | 864 × 1080 picture, 20% of the frame is bars | Keeps 80% of the picture (crops the height) |
Free tools:Crop video to 9:16Crop video to 16:9Crop an image to 4:5
How to resize to 1080 × 1350
- In an editor, set the sequence or export frame size to 1080 × 1350; if the source has a different shape, choose scale to fill (crop) or scale to fit (bars) rather than stretch.
- With FFmpeg, exact size:
ffmpeg -i in.mp4 -vf scale=1080:1350 -c:a copy out.mp4 - With FFmpeg, keep the whole picture and add bars:
ffmpeg -i in.mp4 -vf "scale=1080:1350:force_original_aspect_ratio=decrease,pad=1080:1350:(ow-iw)/2:(oh-ih)/2" -c:a copy out.mp4 - Upscaling a smaller source to 1080 × 1350 makes the file bigger without adding detail; scale down from a larger master when you can.
| Scale | Size | Pixels |
|---|---|---|
| 25% | 270 × 338 | 91,260 |
| 50% | 540 × 676 | 365,040 |
| 75% | 810 × 1012 | 819,720 |
| 150% | 1620 × 2026 | 3,282,120 |
| 200% | 2160 × 2700 | 5,832,000 |
Check a file against 1080 × 1350
Extension and MIME type are labels, not proof of the container. Dimensions and duration come from this browser's media reader. The frame rate is measured by playing the first frames muted; a file faster than your screen's refresh rate reads low. This does not detect codecs, bitrate, corruption or platform upload compatibility. Files and measurements are not sent anywhere.
Frequently asked questions
Is 1080×1350 4K?
No. 4K UHD is 3840×2160 (8,294,400 pixels); 1080×1350 has 1,458,000, 18% of that. By its 1080-pixel short side it falls in YouTube's 1080p quality tier.
What aspect ratio is 1080×1350?
4:5, a width-to-height ratio of 0.8.
What bitrate should a 1080×1350 video use for YouTube?
YouTube recommends 8 Mbps at 24-30 fps and 12 Mbps at 48-60 fps for its 1080p tier (SDR). That is about 60 MB per minute at standard frame rates, before audio.
How does 1080×1350 compare with 1080p?
It has 70% of the pixels of 1920×1080 (1,458,000 vs 2,073,600). Encoding time and file size at equal quality scale roughly with pixel count.
What is 1080×1350 resolution called?
1080 × 1350 is also called 4:5 portrait, Instagram portrait size. The tallest shape a standard feed post can claim before becoming a Reel.
How many megapixels is 1080×1350?
1,458,000 pixels, which is 1.46 megapixels. A 12-megapixel phone photo (4032 × 3024) has 8.4× as many.
How big can I print a 1080×1350 image?
At 300 DPI, the usual photo-print target, 3.6 × 4.5 inches (9.1 × 11.4 cm). At 150 DPI, fine for posters viewed from a distance, twice that: 7.2 × 9.0 inches.
Sources and how we checked
- YouTube Help: Recommended upload encoding settings (checked 2026-10-05)
- Instagram Help: Image resolution of photos you share (checked 2026-10-05)
Pixel counts, ratios, PPI, print sizes, data rates and platform fits are computed from the width and height. Device figures are the makers' own; bitrates are YouTube's recommendations. Reviewed October 6, 2026 by the Koldflux team.