Aspect Ratio Calculator
Work out the aspect ratio of any resolution — and what it is commonly called.
16:9 — 16:9
1920×1080 reduces to 16:9, which is 16:9. A standard display ratio.
Diagnostic telemetry
- Aspect ratio
- 16:9
- Decimal
- 1.778
- Orientation
- Landscape
What this cannot tell you
- Pure arithmetic on the dimensions you enter. It does not read your actual screen — type in the resolution you want to check.
- The "21:9" and "32:9" labels are marketing approximations; the true ratios are 64:27 and 32:9. The tool shows both.
Take this with you
Aspect Ratio Calculator on RunTheTests — free browser-based device tools, no sign-up.