Aspect Ratio Calculator

Resize mode: give one of the two and the other is derived.
Screen mode: the diagonal measurement, usually in inches.
Fit mode: the container to scale into.
Aspect ratio
16:9
Aspect Ratio, Resolution and Screen Size Calculator
Ratio width term
16
Ratio height term
9
Width ÷ height
1.777778
Ratio as x:1
1.7778:1
Inverse (portrait) ratio
9:16
Width
1,920.000000
Height
1,080.000000
Diagonal
2,202.907170
Area
2,073,600.0000
Megapixels
2.0736
Common name
16:9 HD Widescreen (HDTV, 1080p, 4K UHD)
Worked out from Wikipedia, "Aspect ratio (image)" — standard named ratios and their conventional labels and 2 other sources.

How this is worked out

2 steps
  1. Ratio = 1920 : 1080
  2. Divide both by gcd(1920, 1080) = 120 → 16:9

Results are general information, not financial, tax, legal, medical or engineering advice.