Calculate From Dimensions
Scale to New Size
Common Presets
Live Result
Enter width and height to see the aspect ratio.

How It Works

Everything runs in your browser — nothing is uploaded or stored on any server.

Step 01

Enter Dimensions

Type width and height — the aspect ratio calculates instantly.

Step 02

See the Ratio

Simplified ratio (e.g. 16:9), decimal, and height % all shown.

Step 03

Scale to New Size

Enter a new width or height and the other dimension auto-fills.

Step 04

Use Presets

Quick buttons for 16:9, 4:3, 1:1, 9:16, and more common ratios.

How It Helps You

Built for real work — no subscriptions, no watermarks, no surprises.

🎬

Video & Film

Find or confirm ratios for YouTube, TikTok, and cinema formats.

📐

Design & Print

Maintain proportions when resizing logos, images, and layouts.

📱

Social Media

Get exact dimensions for Instagram, Twitter, and LinkedIn formats.

🔢

Auto-Scale

Enter one dimension and the other fills in automatically.

🎯

Common Presets

One-click presets for the most common aspect ratios.

♾️

Forever Free

No sign-up, no limits.