Aspect Ratio Calculator3440x1440 at a glance
| Simplified ratio | 43:18 |
|---|---|
| Decimal (width ÷ height) | 2.3889:1 |
| Written as x:9 | 21.5:9 |
| Closest standard ratio | 21:9 (Ultrawide monitor), 2.38% off |
| Megapixels | 4.95 MP (4,953,600 pixels) |
| Pixels compared with 1920 × 1080 | 2.39× |
| Orientation | Landscape |
| CSS | aspect-ratio: 43 / 18; |
| Padding-top trick | padding-top: 41.8605%; |
What is 3440x1440 used for?
The standard for 34-inch ultrawide monitors, popular for games, long video-editing timelines and side-by-side windows. It is sold as 21:9; the exact ratio is 43:18.
How the ratio is calculated
Divide both sides by their greatest common divisor (GCD). The GCD of 3440 and 1440 is 80, so 3440 ÷ 80 = 43 and 1440 ÷ 80 = 18, which gives 43:18. In CSS that is aspect-ratio: 43 / 18; with the older padding trick the height is 41.8605% of the width.
43:18 is not one of the classic ratios; the closest standard is 21:9, 2.38% off. An exact 21:9 image 3440 px wide would be 1,474.29 px tall instead of 1440, so fitting one into the other means cropping or bars.
Same-ratio sizes (43:18)
3440x1440 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 |
|---|---|---|
| 860 × 360 | 25% | 0.31 |
| ≈ 1147 × 480 | 33.3% | 0.55 |
| 1720 × 720 | 50% | 1.24 |
| ≈ 2293 × 960 | 66.7% | 2.2 |
| 2580 × 1080 | 75% | 2.79 |
| 3440 × 1440 | 100% | 4.95 |
| ≈ 4587 × 1920 | 133.3% | 8.81 |
| 5160 × 2160 | 150% | 11.15 |
| 6880 × 2880 | 200% | 19.81 |
Nearby common sizes
- 2560 × 1080 ≈ 21:9 · UW-FHD (ultrawide 1080p)
- 2560 × 1440 16:9 · QHD (1440p)
- 4096 × 2160 ≈ 1.9:1 · DCI 4K (cinema 4K)
- 3840 × 2160 16:9 · 4K UHD (2160p)
Frequently asked questions
What is the aspect ratio of 3440x1440?
3440 × 1440 has an aspect ratio of 43:18. The greatest common divisor of 3440 and 1440 is 80; dividing both sides by it gives 43:18. As a decimal that is 2.3889:1, 2.38% away from the standard 21:9 ratio.
How many megapixels is 3440x1440?
3440 × 1440 contains 4,953,600 pixels, or 4.95 megapixels. That is 2.39× the pixel count of 1920 × 1080 (Full HD).
Which sizes have the same aspect ratio as 3440x1440?
Exact scaled versions include 860 × 360, 1720 × 720, 2580 × 1080, 5160 × 2160, and 6880 × 2880. Any size of the form 43n × 18n has exactly the same shape.
How do I resize an image to 3440x1440 without distortion?
Crop it to 43:18 first, then scale it to 3440 × 1440. For any width W the matching height is W × 18 ÷ 43. The calculator on this page does the arithmetic: type a new width in box 2 and it fills in the height.
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