Aspect Ratio Calculator
Find the simplified aspect ratio of any width and height, and scale to a new width to get the matching height.
Result
In short
What is the Aspect Ratio Calculator?
The aspect ratio calculator reduces a width and height to their simplest ratio, such as 16:9, and shows the decimal value. Enter a new width and it gives the matching height so images and video keep their proportions when resized. It is useful for design, video and responsive layouts.
How to use it
- Enter the original width and height.
- Read the simplified ratio and the decimal.
- Enter a new width to get the height that keeps the same shape.
Questions
Aspect Ratio Calculator — FAQ
What is an aspect ratio?
It is the proportional relationship between width and height, written as two numbers such as 16:9 or 4:3.
Why is my ratio not a familiar one?
Odd pixel sizes can reduce to large numbers. The decimal value still lets you compare the shape with common ratios.
Are results rounded?
The new height is rounded to two decimal places. Round to whole pixels yourself if your design needs it.
More Developer & Web tools
JSON Formatter & ValidatorJSON MinifierJSON to CSV ConverterCSV to JSON ConverterBase64 Encoder & DecoderURL Encoder & DecoderHTML Entity Encoder & DecoderUUID Generator
Go further