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 = 1280 x 1024 = 1.31 megapixels
  • Aspect ratio = 1.25
  • Angle of diagonal = 0.675 rad = 38.7°
  • Length of diagonal = 1640 pixels

    • Letterboxing

    How does a 1.25 image fit on a screen with a different aspect ratio?

    Cinema screens

    Cinema 2K scope screen (2.39)

    Using 52.4 % of the screen

     Pillar box
    Cinema 2K flat screen (1.85)

    Using 67.6 % of the screen

     Pillar box
    Cinema 2K full envelope (1.90)

    Using 65.8 % of the screen

     Pillar box
    Barco Escape Cinema (5.94)

    Using 21.1 % of the screen

     Pillar box

    TV screens

    HD television (16:9)

    Using 70.4 % of the screen

     Pillar box
    Extra Wide TV (21:9)

    Using 53.8 % of the screen

     Pillar box
    SXGA/QSXGA screen (5:4)

    Using 100% of the screen

     Perfect match
    SD television (4:3)

    Using 83.3 % of the screen

     Pillar box
    Square screen (1.00)

    Using 80 % of the screen

     Letter box
    Vertical HD screen (0.56)

    Using 44.2 % of the screen

     Letter box

    Compare

    Compare to aspect ratio standards from:
    Video • Cinema projectors • Cinema cameras • Photo •

    HDCAM
    NTSC DVD
    NTSC SVCD
    NTSC TV
    NTSC VCD
    PAL DVD
    PAL SVCD
    PAL VCD
    Quicktime HD 1080p
    Quicktime HD 720p
    Quicktime SD 480p
    Red 2K
    Red 3K
    Red 4K

    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
    Portrait distance
    portrait distance, composition, crop factor, focal length