Aspect Ratio Converter
Plug in source dimensions. Get target sizes for every major platform with pixel-accurate fit and fill math.
Tip Always shoot the widest aspect you might need. Cropping down is cheap. Filling out is not.
Source dimensions
Detected ratio
16:9
1.7778
Presets
Source visualization
16:9
YouTube / Landscape
1920 × 1080
Fit
1920×1080
no pad
Fill
1920×1080
no crop
9:16
Shorts / Reels / TikTok
1080 × 1920
Fit
1080×608
pad 0×1312
Fill
3413×1920
crop 2333×0
1:1
Square
1080 × 1080
Fit
1080×608
pad 0×472
Fill
1920×1080
crop 840×0
2.39:1
Cinema
2048 × 858
Fit
1525×858
pad 523×0
Fill
2048×1152
crop 0×294
Math breakdown
| Target | Fit | Pad | Fill | Crop |
|---|---|---|---|---|
| 16:9 | 1920×1080 | 0×0 0×0 each side | 1920×1080 | 0×0 0×0 each side |
| 9:16 | 1080×608 | 0×1312 0×656 each side | 3413×1920 | 2333×0 1167×0 each side |
| 1:1 | 1080×608 | 0×472 0×236 each side | 1920×1080 | 840×0 420×0 each side |
| 2.39:1 | 1525×858 | 523×0 262×0 each side | 2048×1152 | 0×294 0×147 each side |