Aspect Ratio Calculator1080x1920 at a glance
| Simplified ratio | 9:16 |
|---|---|
| Decimal (width ÷ height) | 0.5625:1 |
| Written as x:9 | 9:16 |
| Closest standard ratio | exactly 9:16 (TikTok, Reels, Shorts) |
| Megapixels | 2.07 MP (2,073,600 pixels) |
| Pixels compared with 1920 × 1080 | 1× |
| Orientation | Portrait |
| CSS | aspect-ratio: 9 / 16; |
| Padding-top trick | padding-top: 177.7778%; |
What is 1080x1920 used for?
Full HD turned on its side: the standard for TikTok, Instagram Reels and Stories, YouTube Shorts and other full-screen vertical video, as well as phone wallpapers and portrait digital signage.
Platform formats that use exactly 1080 × 1920: Instagram Reels and Stories (Vertical, full screen), TikTok videos (Vertical, full screen), YouTube Shorts (Vertical, full screen), and Douyin videos (Vertical, full screen)
How the ratio is calculated
Divide both sides by their greatest common divisor (GCD). The GCD of 1080 and 1920 is 120, so 1080 ÷ 120 = 9 and 1920 ÷ 120 = 16, which gives 9:16. In CSS that is aspect-ratio: 9 / 16; with the older padding trick the height is 177.7778% of the width.
Same-ratio sizes (9:16)
1080x1920 scaled down and up without changing its shape. Rows marked ≈ are rounded to whole pixels, so they are less than one pixel off.
| Size (px) | Scale | Megapixels |
|---|---|---|
| 270 × 480 | 25% | 0.13 |
| 360 × 640 | 33.3% | 0.23 |
| 540 × 960 | 50% | 0.52 |
| 720 × 1280 | 66.7% | 0.92 |
| 810 × 1440 | 75% | 1.17 |
| 1080 × 1920 | 100% | 2.07 |
| 1440 × 2560 | 133.3% | 3.69 |
| 1620 × 2880 | 150% | 4.67 |
| 2160 × 3840 | 200% | 8.29 |
| 3240 × 5760 | 300% | 18.66 |
| 4320 × 7680 | 400% | 33.18 |
Nearby common sizes
- 1920 × 1080 16:9 · Full HD (1080p)
- 750 × 1334 ≈ 9:16 · iPhone 6/7/8 and SE
- 1170 × 2532 ≈ 9:19.48 · iPhone 12/13/14
- 1179 × 2556 ≈ 9:19.51 · iPhone 14 Pro/15/16
- 1290 × 2796 ≈ 9:19.51 · iPhone Pro Max/Plus
Turned on its side, 1080 × 1920 becomes 1920 × 1080 (16:9), with the same number of pixels.
Frequently asked questions
What is the aspect ratio of 1080x1920?
1080 × 1920 has an aspect ratio of 9:16. The greatest common divisor of 1080 and 1920 is 120; dividing both sides by it gives 9:16. As a decimal that is 0.5625:1.
How many megapixels is 1080x1920?
1080 × 1920 contains 2,073,600 pixels, or 2.07 megapixels. That is the pixel count of Full HD.
Which sizes have the same aspect ratio as 1080x1920?
Exact scaled versions include 270 × 480, 360 × 640, 540 × 960, 720 × 1280, 810 × 1440, 1440 × 2560, 1620 × 2880, 2160 × 3840, 3240 × 5760, and 4320 × 7680. Any size of the form 9n × 16n has exactly the same shape.
How do I resize an image to 1080x1920 without distortion?
Crop it to 9:16 first, then scale it to 1080 × 1920. For any width W the matching height is W × 16 ÷ 9. The calculator on this page does the arithmetic: type a new width in box 2 and it fills in the height.
Open the full aspect ratio calculator All common resolutions · All platform sizes