Skip to content
Calixo

Aspect Ratio Calculator

Scale a resolution to a new width while keeping the same aspect ratio.

Inputs

Saved Scenarios

— select 2+ to compare

New Height (px)

720

Aspect Ratio

1.7778

Spark says

How it's calculated

Formula

New Height=New WidthOriginal Width/Original HeightNew\ Height = \dfrac{New\ Width}{Original\ Width / Original\ Height}
Original\ Width, Original\ Height
— The source resolution
New\ Width
— The width you're resizing to

What is the Aspect Ratio Calculator?

Aspect ratio is the proportional relationship between width and height. This calculator scales a resolution to a new width while preserving that ratio, so nothing looks stretched.

How to use it

  1. 1 Enter the original width and height.
  2. 2 Enter the new width you want.

Worked examples

1920×1080 scaled to 1280 wide

New height is 720px — still 16:9.

Try it

Frequently asked questions

What's the aspect ratio of 1920×1080?

1920 ÷ 1080 = 1.778, commonly known as 16:9 — the standard for HD and most modern displays.