16:9

the 16:9 aspect ratio in 1:1 squares

16:9 (1.77:1) is a widescreen aspect ratio with a width of 16 units and height of 9 units.

Once seen as exotic, since 2009 it has become the most common aspect ratio for movie screens, televisions and computer screens. It is the international standard image format for digital television and is also used in many smartphones. In home use and for entertainment it has replaced the old "fullscreen" 4:3 aspect ratio.

a 16:9 TV machine under a DVD player

16:9 Media

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  Derivation of the 16:9 aspect ratioThe main figure shows 4:3, 2.00:1, and 2.40:1 rectangles with the same area A, and 16:9 rectangles that covers (black) or is common to (grey) them. The calculation considers the extreme rectangles, where m and n are multipliers to maintain their respective aspect ratios and areas.

References

"A Brief Review on HDTV in Europe in the early 90's | LIVE-PRODUCTION.TV". www.live-production.tv.