1366x768 aspect ratio: 683:384, about 16:9 (0.049% off)
1366 × 768 reduces to 683:384. The greatest common divisor of 1366 and 768 is 2, so 1366 ÷ 2 = 683 and 768 ÷ 2 = 384. That is 0.049% off 16:9. The nearest exact 16:9 sizes are 1360 × 765 and 1376 × 774.
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At a glance
683:384
1366 × 768 is about 16:9, 0.049% off.
- Decimal
- 1.779:1
- Nearest named ratio
- 16:9, 0.049% off
- Orientation
- Landscape
- Pixels
- 1,049,088
- Megapixels
- 1.05
- Greatest common divisor
- 2
How 1366 × 768 reduces
- 1366 = 1 × 768 + 598
- 768 = 1 × 598 + 170
- 598 = 3 × 170 + 88
- 170 = 1 × 88 + 82
- 88 = 1 × 82 + 6
- 82 = 13 × 6 + 4
- 6 = 1 × 4 + 2
- 4 = 2 × 2 + 0
The last divisor, 2, is the greatest common divisor, so 1366 × 768 reduces to 683:384. The method by hand is on the calculator page.
Crop or pad 1366 × 768 to common ratios
| Target | Centered crop | Share kept | Pad canvas |
|---|---|---|---|
| 16:9 | 1365 × 768 | 99.9% | 1376 × 774 |
| 9:16 | 432 × 768 | 31.6% | 1366 × 2428 |
| 4:5 | 614 × 768 | 44.9% | 1366 × 1708 |
| 1:1 | 768 × 768 | 56.2% | 1366 × 1366 |
| 4:3 | 1024 × 768 | 75% | 1366 × 1025 |
| 1.91:1 | 1366 × 715 | 93.1% | 1467 × 768 |
How far 1366 × 768 is from 16:9
1366 × 768 is 0.049% off 16:9. The largest exact 16:9 size inside it is 1360 × 765, 6 px narrower and 3 px shorter. The smallest exact 16:9 canvas around it is 1376 × 774, 10 px wider and 6 px taller.
Whole-pixel downscales
| Divide by | Size | Whole pixels | Nearest whole size |
|---|---|---|---|
| ÷2 | 683 × 384 | yes | same |
| ÷3 | 455.33 × 256 | no | 455 × 256, 0.073% off 683:384 |
| ÷4 | 341.50 × 192 | no | 342 × 192, 0.15% off 683:384 |
| ÷5 | 273.20 × 153.60 | no | 273 × 154, 0.33% off 683:384 |
| ÷6 | 227.67 × 128 | no | 228 × 128, 0.15% off 683:384 |
| ÷8 | 170.75 × 96 | no | 171 × 96, 0.15% off 683:384 |
| ÷10 | 136.60 × 76.80 | no | 137 × 77, 0.032% off 683:384 |
Nearest listed ratios
| Size | Reduced ratio | Decimal | Difference from 1366 × 768 |
|---|---|---|---|
| 1366 × 768this page's size | 683:384 | 1.779:1 | - |
| 1920 × 1080 | 16:9 | 1.778:1 | 0.049% |
| 1360 × 768 | 85:48 | 1.771:1 | 0.44% |
| 4096 × 2160 | 256:135 | 1.896:1 | 6.61% |
Facts about 1366 × 768
- 1366 × 768 is not exactly 16:9: 683:384 is 1.779, against 1.778 for 16:9, 0.049% apart.
- 1366 × 768 divides into whole pixels by 2; ÷3 gives 455.33 × 256, which is not whole pixels.
- Turned on its side, 1366 × 768 becomes 768 × 1366 (384:683).
- Cropped to 9:16, 1366 × 768 keeps 31.6% (432 × 768); cropped to 16:9 it keeps 99.9% (1365 × 768).
- 1366 × 768 is 1,049,088 pixels (1.05 MP), 0.51 times the pixel count of 1920 × 1080.
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Aspect ratio 683:384 (1.779:1). Nearest named ratio 16:9, 0.049% off.
Aspect ratio
683:384
1.779:1
Nearest named ratio: 16:9 (1.778).
Not exactly 16:9: 0.049% off. The nearest exact 16:9 sizes are 1360 × 765 and 1376 × 774.
683:384 is the true reduced ratio. Sizes like this are usually described by their decimal or by the nearest named ratio.
- Width ÷ height
- 1.7786
- Height ÷ width
- 0.5622
- Shape
- landscape
Your numbers, worked
gcd(1366, 768) = 2
1366 ÷ 2 = 683
768 ÷ 2 = 384
1366 ÷ 768 = 1.7786
Show how the gcd was found
- 1366 = 1 × 768 + 598
- 768 = 1 × 598 + 170
- 598 = 3 × 170 + 88
- 170 = 1 × 88 + 82
- 88 = 1 × 82 + 6
- 82 = 13 × 6 + 4
- 6 = 1 × 4 + 2
- 4 = 2 × 2 + 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 1366 × 768
The largest centred crop at each ratio, best fit first. Crop rather than stretch.
| Ratio | Fit | Crop to | Lost |
|---|---|---|---|
| 16:9 | Within 1% (0.049%) | 1365 × 768 | 0.073% |
| 1.91:1 | Trim height | 1366 × 715 | 6.9% |
| 16:10 | Trim width | 1229 × 768 | 10% |
| 2:1 | Trim height | 1366 × 683 | 11.1% |
| 3:2 | Trim width | 1152 × 768 | 15.7% |
| 21:9 | Trim height | 1366 × 585 | 23.8% |
| 4:3 | Trim width | 1024 × 768 | 25% |
| 5:4 | Trim width | 960 × 768 | 29.7% |
| 1:1 | Trim width | 768 × 768 | 43.8% |
| 32:9 | Trim height | 1366 × 384 | 50% |
| 4:5 | Trim width | 614 × 768 | 55.1% |
| 3:4 | Trim width | 576 × 768 | 57.8% |
| 2:3 | Trim width | 512 × 768 | 62.5% |
| 9:16 | Trim width | 432 × 768 | 68.4% |
Solve the missing side
Pick a ratio, then enter the side you know.
Height is 768. Size 1366 by 768 pixels.
Size at 683:384
1366 × 768
Height solved, in pixels.
Your numbers, worked
H = W × 384 ÷ 683 = 1366 × 384 ÷ 683 = 768
Whole number, so no rounding is needed.
Pixel-exact: a 683:384 size needs the width to be a multiple of 683, and 1366 is 2 × 683.
Questions
What aspect ratio is 1366x768?
1366 × 768 is 683:384 (1.779:1). Dividing both sides by their greatest common divisor, 2, gives 683 and 384. The nearest named ratio is 16:9, 0.049% away, so it is close to 16:9 but not exactly it.
Is 1366x768 exactly 16:9?
No. 1366 ÷ 768 = 1.7786, against 1.7778 for 16:9, 0.049% apart. The largest exact 16:9 size inside it is 1360 × 765; the smallest exact 16:9 canvas around it is 1376 × 774.
What is 1366x768 cropped to 9:16?
A centered 9:16 crop of 1366 × 768 is 432 × 768, which keeps 31.6% of the image. Padding it to 9:16 instead gives a 1366 × 2428 canvas with 1,660 px of bars. That canvas is rounded, not exactly 9:16: the exact padded side would be 2428.44 px tall. The smallest exact 9:16 canvas around it is 1368 × 2432.
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