# Aspect ratio: NTSC TV

### 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 = `720` x `486` = `0.35` megapixels
• Aspect ratio = `1.48`
• Angle of diagonal = 0.594 rad = 34°
• Length of diagonal = 868 pixels
• ### Letterboxing

How does a 1.48 image fit on a screen with a different aspect ratio?

#### Cinema screens

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

Using 61.9 % of the screen

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

Using 79.7 % of the screen

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

Using 77.6 % of the screen

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

Using 24.9 % of the screen

Pillar box

#### TV screens

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

Using 83.1 % of the screen

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

Using 63.4 % of the screen

Pillar box
###### SXGA/QSXGA screen (5:4)

Using 84.2 % of the screen

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

Using 98.3 % of the screen

Pillar box
###### Square screen (1.00)

Using 67.5 % of the screen

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

Using 37.5 % of the screen

Letter box

### Compare

Compare to aspect ratio standards from:
VideoCinema projectorsCinema camerasPhoto

#### Photo calculators & converters

Aspect ratio
Image Width x Height → aspect ratio
Aspect Fit
Fit an image on a screen
Composition Calculator
Focal length, distance, crop factor → image composition
Depth-of-Field Calculator
Aperture, focal length, distance, crop → depth-of-field
DPI calculator
Print Width x Height and dpi → megapixels
Image filesize calculator
Image Width x Height JPG/RAW/PNG → bytes
Light calculator (EV)
Aperture, shutter time, ISO → Exposure Value
Megapixel calculator
Image Width x Height → megapixels
Megapixel Aspects
See megapixels in different aspect ratios