Aspect Ratio Calculator

A simple aspect ratio calculator. Select "Format" from the drop down menu and then type in your preferred width to get the correct height according to selected aspect.

Width x Height
Width Height

 

Aspect ratio examples

Common FormatsAspect
Classic 35 mm still photographic film 1.5:1
Traditional television & older computer monitor standard 1.33:1 (4:3)
Common modern computer screen ratio 1.6:1 (16:10 or 8:5)
HD video standard 1.77:1 or 1.78:1 (16:9)
Film FormatsAspect
35 mm US and UK widescreen standard for theatrical film 1.85:1
35 mm anamorphic prior to 1970, used by CinemaScope ("'Scope") and early Panavision
2.35:1
35 mm anamorphic from 1970 onwards. 2.39:1
"two-four-oh" 2.40:1
IMAX motion picture film 1.43:1
Other FormatsAspect
Golden Ratio 1.618:1
Silver Ration (DIN, ISO 216) √2:1 (≈2.414:1)
√5:1 (≈2.2361:1) 0.7292
√3:1 (≈1.7321:1) 0.75

Note: an anamorphic frame (since 1970, 2.39:1) is often incorrectly described (rounded) as 2.40:1 or 2.40 ("two-four-oh"). The aspect ratio of 2.39:1 was confirmed by the most recent revision from August 1993 (SMPTE 195-1993).

https://en.wikipedia.org/wiki/Aspect_ratio_(image)

For a full list of different film formats, please to:
http://en.wikipedia.org/wiki/List_of_film_formats

Common Resolutions

DV_Resolutions.svg

Format Dimension Aspect Ratio
4K UHD 4096 × 2160 px 1.9:1
4K UHD-1 3840 x 2160 px 16:9 or 1.78:1
2K DCI (native resolution) 2048 × 1080 px 1.90:1 (256:135, ~17:9)
2K DCI (flat cropped) 1998 × 1080 px 1.85:1
1080p full HD 1920 x 1080 px 16:9
720p HD 1280 x 720 px 16:9
qHD 960 x 540 px 16:9
PAL (SD) 768 x 576 px 1.33:1

YouTube and Vimeo allow a maximum upload resolution of 4096 × 3072 pixels

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