Aspect Ratio Calculator - 16:9, 9:16, 4:3, 1:1, 21:9 Scaler (2026)
Calculate proportional image and video dimensions for standard aspect ratios (16:9 widescreen, 9:16 TikTok/Reels, 4:3, 1:1 square, and 21:9 ultrawide).
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⚙️ Configuration & Inputs
📊 Results & Analysis
Scaled Dimensions
1920 × 1080 px
Aspect Ratio: 16:9 (1.78:1)
| Selected Aspect Ratio | 16:9 |
| Total Pixels (Megapixels) | 2.07 MP |
| Standard Name | Full HD (1080p) |
| Decimal Aspect Multiplier | 1.7778 |
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Common Video & Display Resolutions
- 16:9 (Widescreen): 1920×1080 (1080p Full HD), 2560×1440 (2K QHD), 3840×2160 (4K UHD)
- 9:16 (Vertical Video): 1080×1920 (Instagram Reels, TikTok, YouTube Shorts)
- 1:1 (Square): 1080×1080 (Classic Instagram Feed Posts)
- 21:9 (Cinematic): 3440×1440 (Ultrawide Gaming & Theatrical Cinema)
Frequently Asked Questions
Always lock the aspect ratio! Multiply the new desired width by (Original Height ÷ Original Width) to calculate the corresponding height.