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Aspect Ratio Calculator & Image Converter

Find the right width or height for any ratio, or turn a square photo into 16:9, 9:16 or 4:5 without cutting anything off.

Convert a photo to 16:9, 9:16 or 4:5 without cropping

Aspect Ratio Calculator

Resize dimensions proportionally or identify simplified aspect ratios

Common Presets:
Original Dimensions16:9
px
px
Target New Dimensions
px
px
Scale:
Rounding:
Live Aspect Ratio Preview1280 × 720 px
16:9
1280 × 720 px
Simplified Ratio16:9
Decimal Ratio1.778 : 1
Total Resolution0.92 MP
OrientationLandscape (Horizontal)
Common sizes at 16:9
1280×7201920×10802560×14403840×2160
CSS:aspect-ratio: 16 / 9; width: 1280px; height: 720px;

Image Aspect Ratio Converter

Turn a square photo into 16:9, 9:16 or 4:5 without cutting anything off: the extra space is filled with a blurred copy, a colour or a gradient. Or crop to the ratio instead. Batch up to 20 images.

or drag and drop your photo here

Ctrl + V to paste imageUp to 20 JPG, PNG, WebP or HEIC images. Nothing is uploaded.

No image? Try one of these:

Square portraitSquare portrait
Product photoProduct photo

How to use

  1. 1Pick a preset such as 16:9, 9:16, 4:5 or 2.39:1, or enter your own width and height.
  2. 2Type one new dimension and the other is calculated, or use Find Ratio from Pixels to turn 1920×1080 into 16:9.
  3. 3To change a photo's ratio, drop up to 20 images into the Image Aspect Ratio Converter below the calculator.
  4. 4Choose a ratio or platform size and fill the extra space with blur, a colour or a gradient, or crop instead.
  5. 5Pick JPG, PNG or WebP and download one image or a ZIP.

Privacy: The calculator and the image converter both run in your browser. Your images are never uploaded.

Want the details? How to calculate aspect ratio and turn a square photo into 16:9 or 9:16 without cropping · Percentage and aspect ratio calculations: the common mistakes, with the real numbers