Aspect Ratio Simplifier
Reduce an entered width-to-height ratio to its simplest whole-number form.
How to use Aspect Ratio Simplifier
1. Enter Ratio Width, Ratio Height. 2. Dimensions must be positive and use the same unit. The ratio is width to height. No image upload or crop is performed. 3. Select Calculate or press Enter. 4. Select Copy result to copy the answer, or Reset to clear the form and result.
Why use this tool?
Dimensions must be positive and use the same unit. The ratio is width to height. No image upload or crop is performed.
How the calculation works
Reduce width:height by their greatest common divisor; decimal dimensions are first expressed as exact rational values. Dimensions must be positive and use the same unit. The ratio is width to height. No image upload or crop is performed. Counts and dimensions use the declared rounding convention; other numbers display up to three decimal places where applicable. Nonzero subsecond durations are labelled. Durations round to the nearest second; nonzero subsecond durations are labelled. File-size output units are decimal. Changing an input label does not convert filled values.
Example
Worked example: Ratio Width = 1920; Ratio Height = 1080. Result: 16:9.
Practical tip
Check the input labels and assumptions against the aspect ratio simplifier task before reusing the number.
Frequently asked questions
What exactly does Aspect Ratio Simplifier calculate?
Reduce width:height by their greatest common divisor; decimal dimensions are first expressed as exact rational values.
Which units or counting rules apply?
Dimensions must be positive and use the same unit. The ratio is width to height. No image upload or crop is performed.
Does this inspect, change or upload my files?
This page calculates the entered values or text in the browser. Numeric image/media tools do not transform files. Check the worked example and stated counting basis; the result does not certify device, search-engine or accessibility outcomes.