Image Resolution, Format, Aspect Ratio
Image Formats
format / aspect ratio comparison: 16:9 video format, 16:10 PC format, 4:3 'old' TV and PC format
Calculate image height, image width, image diagonal and image area with this Excel file (SAVE download from THIS website) 
Typical Resolutions and Aspect Ratios
| Type |
Pixel Resolution |
Format |
| Video Conference 4CIF |
704 x 576 |
|
| Video Conference 4SIF |
352 x 240 |
|
| Video Conference SIF |
704 x 480 |
|
| Video Conference CIF |
352 x 288 |
|
| IBM CGA |
320 x 200 |
1.6:1 |
| CGA |
320 x 240 |
4:3 |
| Mac II |
640 x 480 |
4:3 |
| EGA |
640 x 350 |
|
| VGA |
640 x 480 |
4:3 |
| TV NTSC/td>
| lines: 525 interlaced, 60Hz |
4:3 |
| TV PAL (Europe) |
lines: 625 interlaced, 50Hz |
4:3 |
| MDA |
720 x 350 |
|
| S-VGA |
800 x 600 |
4:3 |
| XGA |
1024 x 768 |
4:3 |
| Apple G4 |
1152 x 768 |
6:4 |
| Sun Microsystem |
1152 x 900 |
1.28:1 |
| UVGA |
1280 x 1024 |
5:4 |
| SXGA |
1280 x 1024 |
5:4 |
| SXGA+ |
1400 x 1050 |
4:3 |
| WXGA |
1366 x 768 |
1:1.78 |
| WXGA |
1280 x 768 |
1:1.66 |
| WXGA |
1280 x 800 |
16:10 |
| SXGAW |
1600 x 1024 |
1.5625:1 |
| UXGA |
1600 x 1200 |
4:3 |
| WSXGA |
1680 x 1050 |
16:10 |
| WUXGA |
1920 x 1200 |
16:10 |
| QXGA |
2048 x 1536 |
4:3 |
| QSXGA |
2560 x 2048 |
5:4 |
| QSXGAW |
3200 x 2048 |
1.5625:1 |
| QUXGA |
3200 x 2400 |
4:3 |
| QUXGAW |
3840 x 2400 |
1.6:1 |
| 1080i60 |
1920 x 1080 interlaced @ 60Hz |
16:9 |
| 1080p60 |
1920 x 1080 progressive @ 60Hz |
16:9 |
| 720p50 |
1280 x 720 progressive @ 50Hz |
16:9 |
| 720p60 |
1280 x 720 progressive @ 60Hz |
16:9 |
| 1080p24 |
1920 x 1080 progressive @ 24Hz (24 fps, frames per second) |
16:9 |
PPI - Pixel per Inch
PPI (also called pixel density, pixel per inch) is the measurement of the pixel resolution of any display (or camera or scanner, etc.). It specifies the pixel resolution within a specified space (width * height). The square below his 500 pixels by 500 pixels. By measuring it on screen, the PPI can be calculated:
1. width and height measurement in mm is changed in inch (multiply the mm with 0.03937)
2. the numbers are divided by 500
3. the results indicate the horizontal and vertical PPI
SD and HD Formats
| Most common formats, SD and HD |
| Format | Frames per Second | Pixels (H X V) | Aspect Ratio | Type |
| 480p | 24, 30, 60 | 345,600 (720 X 480) | 4:3 | SD |
| 576p | 24, 25, 50 | 414,720 (720 X 576) | 4:3 | SD |
| 720p | 24, 25, 30, 50, 60 | 921,600 (1280 X 720) | 16:9 | HD |
| 1080i | 25, 30 | 2,073,600 (1920 X 1080) | 16:9 | HD |
| 1080p | 24, 25, 30, 50, 60 | 2,073,600 (1920 X 1080) | 16:9 | HD |
| HD Resolutions |
| Resolution (W×H) |
Pixels |
Aspect Ratio |
Video Format |
| 1024×768 |
786,432 |
16:9 (non-square pixels) |
720p/XGA |
| 1280×720 |
921,600 |
16:9 |
720p/WXGA |
| 1366×768 |
1,049,088 |
16:9 |
720p/WXGA—HDTV standard format |
| 1024×1080 |
1,105,920 |
16:9 (non-square pixels) |
1080p |
| 1280×1080 |
1,382,400 |
16:9 (non-square pixels) |
<1080p |
| 1920×1080 |
2,073,600 |
16:9 |
1080p—HDTV standard format |
| 3840×2160 |
8,294,400 |
16:9 |
2160p DCI Cinema 4k standard format |
