Aspect Ratio Calculator

Aspect Ratio Calculator

Calculate and convert aspect ratios instantly. Enter any width and height to find the simplified ratio, or resize dimensions while maintaining the same proportions.

How to Use

Enter your original width and height to see the simplified aspect ratio. Use the resize section to calculate new dimensions — enter either a new width or height and the other dimension updates automatically to maintain the ratio. Choose from common presets like 16:9, 4:3, or 1:1 to quickly set standard ratios.

Features

• Ratio Calculation – Simplifies any dimensions to their base ratio using GCD
• Resize Calculator – Lock the ratio and calculate new dimensions proportionally
• Common Presets – Quick access to 16:9, 4:3, 1:1, 21:9, 3:2 and more
• Resolution Presets – Standard resolutions like 720p, 1080p, 1440p, 4K
• Scale Percentage – See how much you’re scaling up or down
• Visual Preview – Rectangle preview showing the proportions
• Real-time Calculation – Results update as you type