Aspect Ratio Cheat Sheet for Video Projects ⋆ Corey Allen

Determining the required resolution for any given aspect ratio can sometimes be a little confusing. On more than one occasion I have had to whip out the calculator to determine the exact right height and width for a final deliverable. This cheat sheet should help make that process much quicker from now on.

Additional Note on 2.4:1 Ratios

It’s not uncommon to see people refer to 2.39:1, 2.40:1, and even 2.35:1 but all of these are referring to 2.39:1. The ratio of 2.35:1 was used in films prior to 1970 and 2.40:1 is just an incorrect rounding of 2.39:1. With this in mind, there are times when a deliverable actually calls for 2.40:1 instead of 2.39:1 like when delivering Blu-ray spec for anamorphic/scope content. If your final deliverable is straight to digital distribution, the choice is yours unless your distributor has a specific demand, so know your ratio.

Cinema DCP – 5K

Cinema DCP 4K

Aspect Ratio	Resolution
Flat (1.85)	3996×2160
Scope (2.39)	4096×1716
Full Container (1.90)	4096×2160

Cinema DCP 2K

Aspect Ratio	Resolution
Flat (1.85)	1998×1080
Scope (2.39)	2048×858
Full Container (1.90)	2048×1080

8K

Aspect Ratio	Resolution
1.33 (4:3)	8192×6144
1.66 (5:3)	8192×4915
1.78 (16:9)	8192×4608
1.85	8192×4428
1.90 (RED 8K FF)	8192×4320
2.00	8192×4096
2.35	8192×3486
2.37 (RED 8K Wide)	8192×3456
2.39 (often called 2.40)	8192×3428
2.40	8192×3413
2.44	8192×3357

8K UHD

Aspect Ratio	Resolution
1.33 (4:3)	7680×5760
1.66 (5:3)	7680×4608
1.78 (16:9)	7680×4320
1.85	7680×4151
1.90	7680×4042
2.00	7680×3840
2.35	7680×3268
2.37	7680×3240
2.39	7680×3213
2.40 (often called 2.40)	7680×3200
2.44	7680×3148

6K

Aspect Ratio	Resolution
1.33 (4:3)	6144×4608
1.66 (5:3)	6144×3686
1.78 (16:9)	6144×3456
1.85	6144×3321
1.90	6144×3234
1.94 (6K Dragon FF)	6144×3160
2.00	6144×3072
2.35	6144×2614
2.37 (RED 6K Wide)	6144×2592
2.39 (often called 2.40)	6144×2571
2.40	6144×2560
2.44	6144×2518

5K

Aspect Ratio	Resolution
1.33 (4:3)	5120×3840
1.66 (5:3)	5120×3072
1.78 (16:9)	5120×2880
1.85	5120×2768
1.90 (Epic-X FF)	5120×2700
2.00	5120×2560
2.35	5120×2179
2.37 (RED Wide)	5120×2160
2.39 (often called 2.40)	5120×2142
2.40	5120×2133
2.44	5120×2098

4K-720p

4K

Aspect Ratio	Resolution
1.33 (4:3)	4096×3072
1.66 (5:3)	4096×2458
1.78 (16:9)	4096×2304
1.85	4096×2214
1.90 (4K RED)	4096×2160
2.00	4096×2048
2.35	4096×1743
2.37 (RED Wide)	4096×1728
2.39 (often called 2.40)	4096×1714
2.40	4096×1707
2.44	4096×1679

4K UHD

Aspect Ratio	Resolution
1.33 (4:3)	3840×2880
1.66 (5:3)	3840×2304
1.78 (16:9)	3840×2160
1.85	3840×2076
1.90	3840×2021
2.00	3840×1920
2.35	3840×1634
2.37 (64:27)	3840×1620
2.39 (often called 2.40)	3840×1607
2.40	3840×1600
2.44	3840×1574

3K

Aspect Ratio	Resolution
1.33 (4:3)	3072×2304
1.66 (5:3)	3072×1843
1.78 (16:9)	3072×1728
1.85	3072×1661
1.90 (3K RED)	3072×1620
2.00	3072×1536
2.35	3072×1307
2.37 (RED Wide)	3072×1296
2.39 (often called 2.40)	3072×1285
2.40	3072×1280
2.44	3072×1259

3K/HD

Aspect Ratio	Resolution
1.33 (4:3)	2880×2160
1.66 (5:3)	2880×1728
1.78 (16:9)	2880×1620
1.85	2880×1557
1.90	2880×1516
2.00	2880×1440
2.35	2880×1226
2.37 (64:27)	2880×1215
2.39 (often called 2.40)	2880×1205
2.40	2880×1200
2.44	2880×1180

2K

Aspect Ratio	Resolution
1.33 (4:3)	2048×1536
1.66 (5:3)	2048×1229
1.77 (16:9)	2048×1152
1.85	2048×1107
1.90	2048×1078
2.00	2048×1024
2.35	2048×871
2.37 (64:27)	2048×864
2.39 (often called 2.40)	2048×858
2.40	2048×853
2.44	2048×839

1080p

Aspect Ratio	Resolution
1.33 (4:3)	1920×1440
1.66 (5:3)	1920×1152
1.78 (16:9)	1920×1080
1.85	1920×1038
1.90	1920×1011
2.00	1920×960
2.35	1920×817
2.37 (64:27)	1920×810
2.39 (often called 2.40)	1920×803
2.40 (Blu-Ray Scope)	1920×800
2.44	1920×787

720p

Aspect Ratio	Resolution
1.33 (4:3)	1280×962
1.66 (5:3)	1280×768
1.78 (16:9)	1280×720
1.85	1280×692
1.90	1280×674
2.00	1280×640
2.35	1280×545
2.37 (64:27)	1280×540
2.39 (often called 2.40)	1280×536
2.40	1280×533
2.44	1280×525