Design tool
Aspect Ratio Calculator
Find a ratio or calculate the missing width or height without distortion.
Runs in your browser- Simplified ratio
- 16:9
- Decimal ratio
- 1.7778
- Matching new height
- 720px
- CSS aspect-ratio
- 1920 / 1080
How to use this aspect ratio calculator
- Enter the original width and height, then add a new width to calculate the matching height.
- Review the calculated totals, units, and assumptions. Check the inputs and units before relying on the result.
- Change one input at a time to compare another case, then copy or save the result you plan to use.
About this aspect ratio calculator
Use the Aspect Ratio Calculator to find a ratio or calculate the missing width or height without distortion. Each control affects a specific part of the result.
You can also use it to compare results after changing one input.
Example
Enter 1920 by 1080 to get 16:9, then set a new width of 1280 to calculate the matching 720 pixel height.
Common uses
- → find a ratio or calculate the missing width or height without distortion
- → compare results after changing one input
- → save an estimate for planning or comparison