Aspect Ratio Calculator

Find and convert aspect ratios for images, video, and screens. Enter width, height, or a ratio (like 16:9) and get matching dimensions instantly.[web:370][web:373][web:378]

Current ratio
16:9
Common example
1920×1080 → 16:9
AD SLOT #1 (TOP) — responsive display AdSense unit above the main calculator.[web:126][web:333]

Aspect ratio and dimensions

Aspect ratio (width : height)
:

Try presets: 16:9 (HD), 4:3 (classic), 1:1 (square), 21:9 (ultrawide).[web:370][web:371][web:379]

Quick summary

  • Current dimensions: 1920 × 1080
  • Simplified aspect ratio: 16:9
  • Ratio formula: ratio = width ÷ height and height = width ÷ ratio.[web:375][web:377][web:378]
AD SLOT #2 (IN‑CONTENT) — in‑article AdSense between tool and explanation.[web:126][web:333][web:231]

What is aspect ratio?

Aspect ratio is the proportional relationship between width and height, expressed as width:height, such as 16:9 or 4:3, and is computed by dividing width by height.[web:375][web:378]

When to use an aspect ratio calculator

  • Resizing images or artwork while avoiding distortion and unwanted cropping.[web:374][web:382][web:384]
  • Matching video players and screen resolutions to standard formats like 16:9, 4:3, or 21:9.[web:370][web:371][web:379]
  • Designing social media graphics and layouts that must fit fixed aspect ratio slots.[web:370][web:378]
AD SLOT #3 (BOTTOM) — footer AdSense placement near end of page.[web:126][web:192]