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Aspect Ratio Calculator

Calculate dimensions for 16:9, 4:3, 1:1, 9:16 and view social media guides.

100% Client-Side (Data never leaves your device)

Smart Aspect Ratio Inspector & Calculator

Aspect Ratio Calculator & Image Inspector

Upload an image to inspect its exact aspect ratio. Calculate dimensions instantly using custom ratio inputs or social media presets.

1. Upload Image to Inspect Ratio

Click to upload imageInstantly analyzes dimensions & aspect ratio

2. Aspect Ratio Presets

Custom Aspect Ratio

Ratio Width

Ratio Height

3. Pixel Dimensions

Width (px)

Height (px)

Aspect Ratio Preview

1920 x 1080

16 : 9

Social Media Size Guide

YouTube Video1920 x 1080 px

16:9

IG Square Post1080 x 1080 px

1:1

TikTok / Reel / Story1080 x 1920 px

9:16

Facebook Cover820 x 312 px

2.63:1

How to Use Aspect Ratio Calculator

Select an aspect ratio preset (e.g. 16:9 for YouTube or 9:16 for TikTok).
Enter the Width, and the system instantly calculates the exact Height.
Alternatively, enter the Height to calculate the Width.
Refer to the bottom guide for standard social media dimensions.

คำถามที่พบบ่อย — Aspect Ratio Calculator

Nowhere. The Aspect Ratio Calculator operates entirely client-side. Your files are processed inside your browser and are never uploaded to any remote servers, ensuring maximum privacy.

Since processing runs locally, the maximum limit depends on your device's memory (RAM) and browser limits. We suggest uploading moderately sized files for optimal speed.

The tool exports your files in high-quality, standard formats (like PNG, JPG, or PDF) that are fully compatible with external editors and viewers.

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