What is 4:5 in pixels?

1080×1350 is the standard 4:5 size. 864×1080 and 1600×2000 are also 4:5.

Is 4:5 the same as 8×10?

Yes. 8:10 reduces to 4:5, so an 8×10 inch print has the same shape as a 1080×1350 post.

Should I use 4:5 or 9:16 on Instagram?

Use 4:5 for feed posts and 9:16 for Reels and Stories.

4:5 aspect ratio in pixels

4:5 in pixels is 1080×1350, the portrait size Instagram and Facebook use in the feed. It is taller than square, so it fills more of the screen. Height = width × 5 ÷ 4.

4:5 resolutions

4:5 resolutions in pixels
Resolution (px)	Name	Typical use
864×1080	864×1080	Lighter portrait posts
1080×1350	1080×1350	Instagram and Facebook portrait feed
1600×2000	1600×2000	High-detail portrait
2400×3000	2400×3000	Print (8×10 inches at 300 dpi)

4:5 sizes by platform

4:5 sizes by platform
Platform	Size (px)	Note
Instagram portrait post	1080×1350	Tallest feed format on Instagram
Facebook feed	1080×1350	Portrait image or video
Threads	1080×1350	Portrait image

4:5 calculator

Type a width or height to get the matching 4:5 size.

Platform presets

Aspect ratio

Ratio widthRatio heightPixel widthPixel height

1080 × 1350px · 4:5

Formula: height = width × 5 ÷ 4

4:5 FAQ

What is 4:5 in pixels?: 1080×1350 is the standard 4:5 size. 864×1080 and 1600×2000 are also 4:5.
Is 4:5 the same as 8×10?: Yes. 8:10 reduces to 4:5, so an 8×10 inch print has the same shape as a 1080×1350 post.
Should I use 4:5 or 9:16 on Instagram?: Use 4:5 for feed posts and 9:16 for Reels and Stories.