Aspect Ratio Calculator
Enter native pixel counts. Outputs the simplified integer ratio plus width ÷ height as a decimal baseline for comparison with marketing names (16∶9 vs 21∶9 etc.).
Simplified ratio
16:9
3840 × 2160 px ≈ 1.777778∶1 horizontal span
How to use
- Use exact native timings—scaled UI layers can mislead if quoting CSS pixels vs hardware modes.
FAQ
Why gcd simplification differs from marketing ratios?
Custom timings (e.g. 3440 panels) seldom land on familiar labels; gcd expresses the factual proportion.
Overview
The calculator walks classic number-theory gcd reduction on integer widths and heights, then echoes decimal width÷height supplemental context.