# Aspect ratio calculator

### Enter width and height

Aspect Ratio (short: A/R) is the width of an image or screen, divided by the height. In landscape orientation, the A/R is > 1, for portrait orientation the A/R is < 1 and for square screens, this is = 1.

### Calculation

• Size = `3840` x `1646` = `6.32` megapixels
• Aspect ratio = `2.33`
• Angle of diagonal = 0.405 rad = 23.2°
• Length of diagonal = 4178 pixels
• ### Letterboxing

How does a 2.33 image fit on a screen with a different aspect ratio?

#### Cinema screens

###### Cinema 2K scope screen (2.39)

Using 97.6 % of the screen

Pillar box
###### Cinema 2K flat screen (1.85)

Using 79.2 % of the screen

Letter box
###### Cinema 2K full envelope (1.90)

Using 80.8 % of the screen

Letter box
###### Barco Escape Cinema (5.94)

Using 38.9 % of the screen

Pillar box

#### TV screens

###### HD television (16:9)

Using 75.8 % of the screen

Letter box
###### Extra Wide TV (21:9)

Using 100% of the screen

Perfect match
###### SXGA/QSXGA screen (5:4)

Using 53.3 % of the screen

Letter box
###### SD television (4:3)

Using 64.2 % of the screen

Letter box
###### Square screen (1.00)

Using 42.5 % of the screen

Letter box
###### Vertical HD screen (0.56)

Using 23.3 % of the screen

Letter box

### Compare

Compare to aspect ratio standards from:
VideoCinema projectorsCinema camerasPhoto

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