Proportional Dimension Engine
Aspect Ratio Calculator
Calculate proportional width or height for any target ratio (16:9, 4:5, 1:1, 9:16, 21:9, 3:2, 4:3).
Proportional Height
1080px
16:9 Height
1080 px
4:5 Portrait Height
2400 px
1:1 Square Height
1920 px
Mathematical Formula
New Height = (Width ÷ Ratio Width) × Ratio Height (e.g. 1920 ÷ 16 × 9 = 1080 px)
Quick Presets & Industry Standards
Frequently Asked Questions
What is an aspect ratio in design?
The proportional relationship between an image's width and height, expressed as two numbers separated by a colon (e.g. 16:9).