Aspect ratio reference
2:1 aspect ratio: sizes in pixels and where it is used.
2:1 means 2 units wide for every 1 tall, a decimal of 2. At 1080 pixels wide that is 1080 by 540; at 1920 wide, 1920 by 960. Large link cards on X, blog covers and hero banners; 1200 by 600.
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- Ratio
- 2:1
- Decimal
- 2
- Most common size
- 1200 x 600
- At 1080 px wide
- 1080 x 540
Landscape or square
2 ÷ 1
Scale 2:1 to any size
The calculator opens at 1200 by 600. Type a new width or height and the other side keeps the 2:1 ratio.
Your dimensions
Scale to a new size
Fill in one side; the other follows the same ratio.
1080 x 540 keeps the 2:1 ratio.
Common 2:1 sizes in pixels
Every size below reduces to 2:1. Each links to its own page.
| Size | Megapixels | Type | Used by |
|---|---|---|---|
| 1200 x 600 | 0.72 | og | The 2:1 size behind large link cards on X and a default cover shape in blog and newsletter tools |
| 1600 x 800 | 1.28 | og | 2:1 at 1600 pixels wide, the header size newsletter tools and blog themes tend to default to because it fills a wide column without pushing the opening line off the screen |
About the 2:1 ratio
2:1 is 2 units wide for every 1 tall, decimal 2.0: exactly twice as wide as high. 1200 by 600 pixels is its best-known social size because X recommends it for the large summary card that shows an image above a link (the older card was 1.91:1, and either still works). Many blog platforms and newsletter tools default to a 2:1 cover for the same reason.
Beyond link cards, 2:1 is the Univisium film format, and the 18:9 phone screens introduced around 2017 (the LG G6 at 2880 by 1440, the OnePlus 5T at 2160 by 1080) are exactly 2:1. Website hero banners often use it because it fills a wide viewport without pushing the headline below the fold. On social feeds it displays shorter than 16:9 and far shorter than 4:5, so it is a card and banner ratio, not a post ratio.
Cropping 2:1 to 1.91:1 costs 5 percent of the width and to 16:9 costs 11 percent, so one 1200 by 600 cover serves X, Facebook and LinkedIn previews with a small trim. To 1:1 you keep half the width. Common sizes: 1200 by 600, 1600 by 800, 2000 by 1000, 1000 by 500 and 2160 by 1080.
Questions about 2:1
1200 by 600 for an X large summary card or blog cover, 1600 by 800 and 2000 by 1000 for larger covers, 1000 by 500 for a small banner. The height is always half the width, so the arithmetic needs no calculator: 1440 wide is 720 tall.
Yes: 1200 divided by 600 is exactly 2. X recommends a 2:1 image for the summary_large_image card, and 1200 by 600 is the size most sites use for it. The same file works as an Open Graph image on Facebook and LinkedIn, which trim about 5 percent of the width to reach 1.91:1.
Yes. 18 divided by 9 is 2, so the 18:9 phone screens introduced around 2017 (2160 by 1080 and 2880 by 1440) are exactly 2:1; phone makers wrote it as 18:9 to show how it compares with 16:9. Later phones moved to 19.5:9 and 20:9, which are taller.
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Aspect ratio guides
- All 44 platform sizes
- 1:1 ratio
- 4:5 ratio
- 5:4 ratio
- 3:4 ratio
- 4:3 ratio
- 9:16 ratio
- 16:9 ratio
- 2:3 ratio
- 3:2 ratio
- 1.91:1 ratio
- 3:1 ratio
- 4:1 ratio
- 16:10 ratio
Common resolutions by ratio
Square posts, profile pictures, album art and carousel slides on every platform.
Portrait feed posts on Instagram, Facebook, LinkedIn and Threads.
Landscape twin of 4:5; 8 by 10 inch prints and the 1280 by 1024 monitor.
iPads, compact cameras, old TVs and 4:3 slides; a landscape option in feeds.
Full-screen vertical: Stories, Reels, TikTok, Shorts and phone wallpapers.
HD video, YouTube thumbnails, monitors and TVs; 1920 by 1080 and 1280 by 720.
35mm film and most camera sensors, 4 by 6 inch prints and Surface screens.
Link preview and Open Graph images on Facebook and LinkedIn; 1200 by 628.
Laptop display ratio: 1920 by 1200, 2560 by 1600, 1440 by 900.