3:1 aspect ratio
3.0000:1 · 1500×500 px · also called 1500x500, header ratio, panorama
3:1 is the profile-header shape: X/Twitter headers are 1500×500 px, and many site-wide promo strips use the same proportion.
What 3:1 means
A 3:1 frame is 3 times wider than it is tall — divide the width by 3 for the height. Exact sizes: 1200×400, 1500×500, 2400×800.
Where it is used
Social profile headers, site-wide announcement strips, wide display leaderboards after padding, and marketplace store banners.
3:1 in pixels
Every row below is exactly 3:1. Divide the width by 3.0000 to get the height for any size not listed.
| Width (px) | Height (px) | Total pixels |
|---|---|---|
| 900 | 300 | 0.27 MP |
| 1200 | 400 | 0.48 MP |
| 1500 | 500 | 0.75 MP |
| 1800 | 600 | 1.08 MP |
| 2400 | 800 | 1.92 MP |
3:1 in mm and inches
Physical equivalents at common print widths, with the pixel size needed for 300 DPI print.
| Width (mm) | Height (mm) | Inches | Pixels @ 300 DPI |
|---|---|---|---|
| 50 | 16.7 | 1.97″ × 0.66″ | 591×197 |
| 100 | 33.3 | 3.94″ × 1.31″ | 1181×393 |
| 150 | 50 | 5.91″ × 1.97″ | 1772×591 |
| 210 | 70 | 8.27″ × 2.76″ | 2480×827 |
| 297 | 99 | 11.69″ × 3.90″ | 3508×1169 |
Working with 3:1
- 01Assume a centred circular avatar overlaps the lower-left third of profile headers.
- 02Keep type to four or five words — at 500 px tall, anything more shrinks below legibility.
- 03Design a mobile crop: phones show roughly the centre 60% of a 3:1 header.
3:1 questions, answered
What is 3:1 in pixels?
1500×500 px is the standard profile-header size.
Is 3:1 the same as a leaderboard?
No. The 728×90 leaderboard is roughly 8:1 — much wider and shorter.
Can I use 3:1 in a feed?
No feed renders it natively; it will be cropped or padded.
Free tools for 3:1
Never crop by hand again. Xeli reframes for you.
Xeli generates every ratio a campaign needs from one master — 3:1 included — with safe zones respected per placement.
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