CPM Calculator
Work out advertising cost per thousand impressions from spend and reach.
Creator Tools · FREE TO USE
Aspect Ratio Calculator
Simplify image dimensions and resize a design without changing its proportions.
02EXAMPLE RESULT
Aspect ratio
16:9
Suggested resized dimensions1280 × 720px
Exact new height720px
Width / height1.777778
Results update as you type. Calculate adds a snapshot to your history.
How this calculation works
Enter whole-pixel dimensions. The simplified ratio uses the greatest common divisor. The exact scaled height may be fractional; the suggested pixel height is rounded to the nearest pixel and can introduce a very small proportion difference.
Simplified ratio = width/GCD : height/GCD. New height = new width × original height ÷ original width.
Your calculation, step by step
- The greatest common divisor of 1920 and 1080 is 120.
- Divide both dimensions by 120 to get 16:9.
- Scale height by 1280 ÷ 1920; round to the nearest pixel, with a minimum height of 1 pixel.
A worked example
1,920 × 1,080 simplifies to 16:9. At 1,280 pixels wide, its matching height is 720 pixels.