Contain
Output: 1080x607.5
Padding (total x/y): 0 / 1312.5
Per side: 0 x / 656.25 y
100% Browser-Based
Aspect Ratio Calc
Calculate exact dimensions, compare contain vs cover behavior, batch-check platform presets, and copy ready-to-use export templates.
Source + Ratio
Source width
Source height
Detected ratio: 16:9
Quick ratio presets
Ratio width
Ratio height
Selected ratio: 16:9
Solve missing dimension
Fill one value and leave the other empty to auto-calculate.
Known width
Known height
Result: 1920x1080
Fit / Fill
Compare exact contain (letterbox) and cover (crop) output for a target frame.
Target width
Target height
Target ratio: 9:16
Cover
Scaled source: 3413.333x1920
Crop (total x/y): 2333.333 / 0
Per side: 1166.667 x / 0 y
Batch Presets
Select one or more targets to generate contain/cover outputs in bulk.
| Preset | Target | Contain | Cover | Action |
|---|---|---|---|---|
| YouTube 1080p | 1920x1080 (16:9) | 1920x1080 | 1920x1080 | |
| Shorts/Reels 1080x1920 | 1080x1920 (9:16) | 1080x607.5 | 3413.333x1920 | |
| Instagram 1080x1080 | 1080x1080 (1:1) | 1080x607.5 | 1920x1080 |
Export & Copy Templates
Export format
Use this output in docs, code, or production scripts.