4:3 Aspect Ratio Calculator for Facebook video

Instructions

1. Enter the original width (W1) and height (H1).
2. Enter either the new width (W2) or new height (H2) to compute the other.
3. Change values at any time — use Reset to restore defaults.

Facebook Aspect Ratio Guide

Facebook supports a wide range of video formats across its different placements. Choosing the right aspect ratio is key to capturing audience attention and ensuring your video is displayed correctly.

Feed Videos

For videos that appear in the main Facebook feed, vertical formats perform best as they occupy more screen space on mobile devices.

• Recommended (4:5): A portrait aspect ratio like 4:5 is ideal for mobile viewing. A common resolution is 1080x1350 pixels.
• Square (1:1): Square videos (e.g., 1080x1080 pixels) are also highly effective and versatile.
• Landscape (16:9): While supported, horizontal videos take up less screen space and may be less engaging on mobile.

Facebook Stories & Reels (9:16)

Like Instagram, Facebook Stories and Reels are designed for a full-screen, vertical experience. The optimal aspect ratio is 9:16 with a resolution of 1080x1920 pixels.

Visual Aspect Ratio Examples

Additional Specifications

• Recommended Formats: MP4 or MOV.
• Max Video Length: Up to 240 minutes for feed videos (though shorter is better for engagement).
• Max File Size: Up to 4GB.

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The 4:3 aspect ratio, often called "fullscreen" or "standard definition," was the universal standard for television and computer monitors for decades. While widescreen (16:9) is now dominant, 4:3 remains relevant for its classic, retro feel and its use in specific photography formats.

What is the 4:3 Aspect Ratio?

The 4:3 aspect ratio was the standard for 20th-century television (NTSC, PAL) and early computer displays. It provides a more squarish frame compared to modern widescreen formats. For every 4 units of width, there are 3 units of height.

Common resolutions for a 4:3 display include 640x480 (VGA), 800x600 (SVGA), and 1024x768 (XGA).

Why 4:3 is Still Relevant

• Retro Aesthetic: It instantly gives video content a vintage or classic TV show feel.
• Photography Standard: It's the native aspect ratio for Micro Four Thirds cameras and is a common option in many digital cameras.
• iPad Displays: Apple's iPads use a 4:3 aspect ratio, making it ideal for apps and content designed for those devices.

How 4:3 Interacts with Widescreen

When you display a 4:3 video on a modern 16:9 screen (like a TV or YouTube), you will see black bars on the left and right sides. This effect is called pillarboxing. Conversely, if you watch a 16:9 video on a 4:3 screen, you'll see black bars on the top and bottom, known as letterboxing.

Frequently Asked Questions (FAQ)

What is a common 4:3 resolution?

Common 4:3 resolutions include 640x480 (SD), 800x600, and 1024x768. These were standards for older computer monitors and standard-definition television.

Should I use 4:3 for YouTube?

Generally, no. YouTube's player is 16:9, so uploading a 4:3 video will result in pillarboxing (black bars on the sides). It should only be used if you are intentionally aiming for a retro or specific artistic style.

What is the difference between pillarboxing and letterboxing?

Pillarboxing adds black bars to the sides of the content to fit a wider screen (e.g., 4:3 video on a 16:9 screen). Letterboxing adds black bars to the top and bottom to fit a taller screen (e.g., 16:9 video on a 4:3 screen).