Video Aspect Ratio Calculator
Work out scaled dimensions, detect the ratio, and get crop parameters for 16:9, 9:16 or 1:1.
FreeNo sign-up
Source size
×
- Ratio
- 16:9
- Decimal
- 1.778
- Pixels
- 2.1 MP
- Orientation
- Landscape
- Closest standard ratio
- 16:9 (0.0%)
Crop to
Crop box (w:h+X+Y)
1920×1080 +0+0
ffmpeg filter
-vf "crop=1920:1080:0:0"
Scaled sizes
| Width | Height |
|---|---|
| 1920 | 1080 |
| 1280 | 720 |
| 1080 | 608 |
| 854 | 480 |
| 720 | 405 |
| 640 | 360 |
| 480 | 270 |
File size estimate
- Estimated size
- 45.0 MB
Based on a constant bitrate; real size depends on scene complexity and encoder settings.
Work out scaled dimensions, detect the ratio, and get crop parameters for 16:9, 9:16 or 1:1.
Repurposing one video for several platforms usually stalls on aspect ratio: a landscape clip on a vertical feed gets letterboxed, and stretching it distorts faces. This tool reduces the ratio, identifies the closest standard format, and gives you the exact crop box plus a ready-to-run ffmpeg filter.
How to use it
- 1Enter the source width and height, or tap a preset (1080p, vertical, square, 4K).
- 2Pick a target ratio and read the crop box dimensions and offsets.
- 3Copy the ffmpeg filter, or choose an output resolution from the scaled ladder.
FAQ
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