Anamorphic cinema

2.39:1 aspect ratio

2.3900:1 · 2048×857 px · also called cinemascope, 2.4:1, widescreen film

2.39:1 is the theatrical scope ratio. Advertisers use it deliberately to signal 'film', usually in brand campaigns and site heroes where the letterbox is part of the aesthetic.

Ratio
2.39:1
Decimal
2.390:1
Standard px
2048×857
Placements
0
Calculate a 2.39:1 size
2048×857

What 2.39:1 means

A 2.39:1 frame is 2.39 times wider than it is tall — multiply the width by 0.4184 to get the height. 1920×803 and 4096×1716 (DCI scope) are the standard sizes.

Where it is used

Brand films, YouTube brand spots, desktop hero video and pre-roll where a cinematic register is intentional.

2.39:1 in pixels

Every row below is exactly 2.39:1. Divide the width by 2.3900 to get the height for any size not listed.

Width (px)Height (px)Total pixels
12805360.69 MP
19208031.54 MP
20488571.76 MP
384016076.17 MP
409617147.02 MP

2.39:1 in mm and inches

Physical equivalents at common print widths, with the pixel size needed for 300 DPI print.

Width (mm)Height (mm)InchesPixels @ 300 DPI
5020.91.97″ × 0.82591×247
10041.83.94″ × 1.651181×494
15062.85.91″ × 2.471772×742
21087.98.27″ × 3.462480×1038
297124.311.69″ × 4.893508×1468

Working with 2.39:1

  1. 01If the letterbox is intentional, bake it in; if not, deliver 16:9 and crop in the edit.
  2. 02Performance placements punish letterboxing — keep 2.39:1 for brand, not for direct response.
  3. 03Subtitle safely: at 803 px tall, captions need at least 36 px type.

2.39:1 questions, answered

What is 2.39:1 in pixels?

1920×803 px is the common HD scope frame; DCI scope is 4096×1716 px.

Is 2.39:1 the same as 2.35:1?

They are close but not identical — 2.35:1 is the older anamorphic standard, 2.39:1 the current one.

Should I use it for paid social?

Rarely. Vertical or square frames outperform it on every mobile surface.

Free tools for 2.39:1

Related ratios

Never crop by hand again. Xeli reframes for you.

Xeli generates every ratio a campaign needs from one master — 2.39:1 included — with safe zones respected per placement.

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