Aspect Ratio Calculator1280x720 at a glance
| Simplified ratio | 16:9 |
|---|---|
| Decimal (width ÷ height) | 1.7778:1 |
| Written as x:9 | 16:9 |
| Closest standard ratio | exactly 16:9 (YouTube, HD/4K video) |
| Megapixels | 0.92 MP (921,600 pixels) |
| Pixels compared with 1920 × 1080 | 0.44× |
| Orientation | Landscape |
| CSS | aspect-ratio: 16 / 9; |
| Padding-top trick | padding-top: 56.25%; |
What is 1280x720 used for?
The baseline HD resolution. It is used for 720p video and livestreams where bandwidth is limited, small TVs and older laptops and lightweight web video embeds, and it is the common minimum size for YouTube thumbnails.
Platform formats that use exactly 1280 × 720: YouTube videos (720p) and YouTube thumbnails (Common minimum)
How the ratio is calculated
Divide both sides by their greatest common divisor (GCD). The GCD of 1280 and 720 is 80, so 1280 ÷ 80 = 16 and 720 ÷ 80 = 9, which gives 16:9. In CSS that is aspect-ratio: 16 / 9; with the older padding trick the height is 56.25% of the width.
Same-ratio sizes (16:9)
1280x720 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 |
|---|---|---|
| 320 × 180 | 25% | 0.06 |
| ≈ 427 × 240 | 33.3% | 0.1 |
| 640 × 360 | 50% | 0.23 |
| ≈ 853 × 480 | 66.7% | 0.41 |
| 960 × 540 | 75% | 0.52 |
| 1280 × 720 | 100% | 0.92 |
| ≈ 1707 × 960 | 133.3% | 1.64 |
| 1920 × 1080 | 150% | 2.07 |
| 2560 × 1440 | 200% | 3.69 |
| 3840 × 2160 | 300% | 8.29 |
| 5120 × 2880 | 400% | 14.75 |
Other standard 16:9 resolutions
- 1920 × 1080 Full HD (1080p)
- 2560 × 1440 QHD (1440p)
- 3840 × 2160 4K UHD (2160p)
- 7680 × 4320 8K UHD (4320p)
- 1536 × 864 HD+ (1080p at 125%)
- 1600 × 900 HD+ (900p)
Nearby common sizes
- 1366 × 768 ≈ 16:9 · WXGA (HD)
- 1200 × 628 ≈ 1.91:1 · Link preview image
- 1440 × 900 8:5 · WXGA+
- 1024 × 768 4:3 · XGA
Frequently asked questions
What is the aspect ratio of 1280x720?
1280 × 720 has an aspect ratio of 16:9. The greatest common divisor of 1280 and 720 is 80; dividing both sides by it gives 16:9. As a decimal that is 1.7778:1.
How many megapixels is 1280x720?
1280 × 720 contains 921,600 pixels, or 0.92 megapixels. That is 0.44× the pixel count of 1920 × 1080 (Full HD).
Which sizes have the same aspect ratio as 1280x720?
Exact scaled versions include 320 × 180, 640 × 360, 960 × 540, 1920 × 1080, 2560 × 1440, 3840 × 2160, and 5120 × 2880. Standard resolutions with the same 16:9 ratio are 1920 × 1080, 2560 × 1440, 3840 × 2160, 7680 × 4320, 1536 × 864, and 1600 × 900. Any size of the form 16n × 9n has exactly the same shape.
How do I resize an image to 1280x720 without distortion?
Crop it to 16:9 first, then scale it to 1280 × 720. For any width W the matching height is W × 9 ÷ 16. 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