16:9
AspectRatioKit
The Definitive Reference

Complete Aspect Ratio & Resolution Guide

Everything you need to know about standard image and video proportions, from 35mm photography to modern 9:16 vertical reels and cinematic IMAX.

Platform Dimensions Cheatsheet

Exact upload resolutions required by major social platforms and display hardware.

YouTube16:9
YouTube Video & Stream
1920 × 1080 px

Standard 1080p Full HD video uploads and live streams.

YouTube9:16
YouTube Shorts
1080 × 1920 px

Vertical short-form video feeds.

YouTube16:9
YouTube Thumbnail
1280 × 720 px

Minimum 640px width; 1280x720 recommended for crisp rendering.

YouTube16:9
YouTube Channel Banner
2560 × 1440 px

Safe text area is 1546x423 in center.

Instagram4:5
Instagram Portrait Feed
1080 × 1350 px

Takes maximum vertical screen space in mobile feeds.

Instagram1:1
Instagram Square Post
1080 × 1080 px

Classic square post format.

Instagram9:16
Instagram Reels & Stories
1080 × 1920 px

Full-screen mobile story and reel dimensions.

TikTok9:16
TikTok Video
1080 × 1920 px

Vertical 1080x1920 standard for TikTok uploads.

X / Twitter16:9
X (Twitter) Feed Post
1200 × 675 px

Crisp preview in timeline without auto-crop.

X / Twitter3:1
X (Twitter) Header Banner
1500 × 500 px

Profile banner header.

LinkedIn1.91:1
LinkedIn Post Image
1200 × 627 px

Standard link preview and feed update size.

LinkedIn4:1
LinkedIn Personal Banner
1584 × 396 px

Background header banner for personal profile.

Pinterest2:3
Pinterest Standard Pin
1000 × 1500 px

Recommended optimal pin aspect ratio.

Monitors16:9
4K Ultra HD Display
3840 × 2160 px

Modern 4K UHD monitors, TVs, and wallpapers.

Monitors16:9
QHD 1440p Gaming
2560 × 1440 px

Popular high-performance desktop gaming monitor standard.

Monitors21:9
21:9 Ultrawide QHD
3440 × 1440 px

Curved ultrawide productivity and simulator gaming display.

Monitors32:9
32:9 Super Ultrawide
5120 × 1440 px

Dual QHD seamless super ultrawide monitors.

Apple16:10
MacBook Pro Retina (16:10)
3024 × 1964 px

Apple 14-inch / 16-inch Liquid Retina XDR screen ratio.

Apple4:3
iPad Display (4:3)
2732 × 2048 px

iPad Pro 12.9-inch native aspect resolution.

Cinema1.43:1
IMAX 70mm Film
4096 × 2864 px

True full-height 15-perf 70mm IMAX format (e.g. Oppenheimer).

Cinema2.39:1
Cinemascope / Anamorphic
4096 × 1714 px

Standard widescreen cinematic theatrical release ratio.

Photography3:2
35mm DSLR Sensor (3:2)
6000 × 4000 px

Classic 24MP full-frame and APS-C camera sensor ratio.

Print5:4
Classic 8x10 Print (5:4)
3000 × 2400 px

Standard photographic portrait print ratio at 300 DPI.

Cinematic Deep Dive

The Oppenheimer Aspect Ratio Paradox

Director Christopher Nolan famously used multiple aspect ratios in Oppenheimer and Interstellar. Understanding why demonstrates the power of framing:

1.43:1 Full IMAX (70mm)Tall Frame

Shot on 15-perforation 70mm film. Projects an immense vertical frame that occupies the entire peripheral vision in authentic 70mm IMAX theaters.

2.20:1 / 2.39:1 Standard TheatricalWidescreen Scope

Standard multiplex theaters show the film in standard scope, cropping the top and bottom of the tall IMAX scenes (sometimes dubbed "Croppenheimer").