Aspect Ratio Calculator
Calculate aspect ratio from technical measurements.
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What this tool does
Calculate aspect ratio from technical measurements. Ratio depends on pixel aspect ratio being square.
How to use the Aspect Ratio Calculator
- Enter or select width (pixels).
- Enter or select height (pixels).
- Read the calculated result; change any measurement to compare alternatives.
Formula
reduce integer width:height by greatest common divisor
- width
- Width (pixels)
- height
- Height (pixels)
Ratio depends on pixel aspect ratio being square.
Worked example
For aspect ratio calculator, the following measurements illustrate the exact method: Width (pixels): 1920; Height (pixels): 1080.
Inputs
- Width (pixels)1920
- Height (pixels)1080
Result
- Reduced aspect ratio16:9
- Width/height ratio1.78
Results explained
- Reduced aspect ratio
- Reduced aspect ratio from the formula above. Ratio depends on pixel aspect ratio being square.
- Width/height ratio
- Width/height ratio from the formula above. Ratio depends on pixel aspect ratio being square.
Frequently asked questions
reduce integer width:height by greatest common divisor
Ratio depends on pixel aspect ratio being square.
Units appear in input and result labels. Keep lengths, pixel counts, bitrate and time units consistent.
Mathematical results follow the stated model; actual lenses, compression, viewing preferences and device specifications may differ.
No. It calculates from your entered values entirely in the browser.