1920x1080 aspect ratio: 16:9 (1.778:1)
1920 × 1080 reduces to 16:9. The greatest common divisor of 1920 and 1080 is 120, so 1920 ÷ 120 = 16 and 1080 ÷ 120 = 9. That is exactly 16:9.
Published · Updated · Sources last verified
At a glance
16:9
1920 × 1080 is exactly 16:9.
- Decimal
- 1.778:1
- Nearest named ratio
- 16:9, exact
- Orientation
- Landscape
- Pixels
- 2,073,600
- Megapixels
- 2.07
- Greatest common divisor
- 120
How 1920 × 1080 reduces
- 1920 = 1 × 1080 + 840
- 1080 = 1 × 840 + 240
- 840 = 3 × 240 + 120
- 240 = 2 × 120 + 0
The last divisor, 120, is the greatest common divisor, so 1920 × 1080 reduces to 16:9. The method by hand is on the calculator page.
Crop or pad 1920 × 1080 to common ratios
Whole-pixel downscales
| Divide by | Size | Whole pixels | Nearest whole size |
|---|---|---|---|
| ÷2 | 960 × 540 | yes | same |
| ÷3 | 640 × 360 | yes | same |
| ÷4 | 480 × 270 | yes | same |
| ÷5 | 384 × 216 | yes | same |
| ÷6 | 320 × 180 | yes | same |
| ÷8 | 240 × 135 | yes | same |
| ÷10 | 192 × 108 | yes | same |
Other listed sizes at 16:9
| Size | Scale from 1920 × 1080 | Whole-number scale | Pixel count |
|---|---|---|---|
| 1280 × 720 | 0.667 | no | 0.444× |
| 1920 × 1080this page's size | 1 | - | 1× |
| 2560 × 1440 | 1.333 | no | 1.778× |
| 3840 × 2160 | 2 | yes, ×2 | 4× |
Facts about 1920 × 1080
- 1920 × 1080 is exactly 16:9: 120 × 16 by 120 × 9.
- 1920 × 1080 divides into whole pixels by 2, 3, 4, 5, 6, 8 and 10, so a one-third size (640 × 360) is still whole pixels.
- Among the other listed 16:9 sizes, 3840 × 2160 (×2) is a whole-number multiple of it; 2560 × 1440 (×1.333) and 1280 × 720 (×0.667) are not whole-number scales of it.
- Turned on its side, 1920 × 1080 becomes 1080 × 1920 (9:16).
- Cropped to 9:16, 1920 × 1080 keeps 31.7% (608 × 1080); cropped to 1:1 it keeps 56.3% (1080 × 1080).
Sourced notes
This size is one of the resolutions in YouTube's recommended 16:9 upload list.
Source: YouTube Help: recommended upload resolutions and aspect ratios. Last verified 2026-10-05.
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Aspect ratio 16:9 (1.778:1). Exact match for 16:9.
Aspect ratio
16:9
1.778:1
Exact match for 16:9.
- Width ÷ height
- 1.7778
- Height ÷ width
- 0.5625
- Shape
- landscape
Your numbers, worked
gcd(1920, 1080) = 120
1920 ÷ 120 = 16
1080 ÷ 120 = 9
1920 ÷ 1080 = 1.7778
Show how the gcd was found
- 1920 = 1 × 1080 + 840
- 1080 = 1 × 840 + 240
- 840 = 3 × 240 + 120
- 240 = 2 × 120 + 0
Divide the larger side by the smaller, then divide the last divisor by the remainder until the remainder is 0. The last divisor is the gcd.
What each ratio would cut from 1920 × 1080
The largest centred crop at each ratio, best fit first. Crop rather than stretch.
| Ratio | Fit | Crop to | Lost |
|---|---|---|---|
| 16:9 | Exact | 1920 × 1080 | 0% |
| 1.91:1 | Trim height | 1920 × 1005 | 6.94% |
| 16:10 | Trim width | 1728 × 1080 | 10% |
| 2:1 | Trim height | 1920 × 960 | 11.1% |
| 3:2 | Trim width | 1620 × 1080 | 15.6% |
| 21:9 | Trim height | 1920 × 823 | 23.8% |
| 4:3 | Trim width | 1440 × 1080 | 25% |
| 5:4 | Trim width | 1350 × 1080 | 29.7% |
| 1:1 | Trim width | 1080 × 1080 | 43.8% |
| 32:9 | Trim height | 1920 × 540 | 50% |
| 4:5 | Trim width | 864 × 1080 | 55% |
| 3:4 | Trim width | 810 × 1080 | 57.8% |
| 2:3 | Trim width | 720 × 1080 | 62.5% |
| 9:16 | Trim width | 608 × 1080 | 68.3% |
Solve the missing side
Pick a ratio, then enter the side you know.
Height is 1080. Size 1920 by 1080 pixels.
Size at 16:9
1920 × 1080
Height solved, in pixels.
Your numbers, worked
H = W × 9 ÷ 16 = 1920 × 9 ÷ 16 = 1080
Whole number, so no rounding is needed.
Pixel-exact: a 16:9 size needs the width to be a multiple of 16, and 1920 is 120 × 16.
Questions
What aspect ratio is 1920x1080?
1920 × 1080 is 16:9 (1.778:1). Dividing both sides by their greatest common divisor, 120, gives 16 and 9. That is exactly 16:9.
How do I resize 1920x1080 without distortion?
Keep the ratio at 16:9: new height = new width × 9 ÷ 16. Dividing both sides by 2, 3, 4, 5, 6, 8 or 10 keeps whole pixels, for example 192 × 108 at ÷10.
What is 1920x1080 cropped to 9:16?
A centered 9:16 crop of 1920 × 1080 is 608 × 1080, which keeps 31.7% of the image. Padding it to 9:16 instead gives a 1920 × 3413 canvas with 2,333 px of bars. That canvas is rounded, not exactly 9:16: the exact padded side would be 3413.33 px tall. The smallest exact 9:16 canvas around it is 1926 × 3424.
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Apart from the sourced notes above, which devices use this size, and marketing names for it, are not covered: we did not verify a primary source for them, so this page sticks to arithmetic.