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Video & Image Aspect Ratio Calculator

Calculate exact pixel dimensions, downscaling/upscaling proportions, letterbox padding, and bitrate estimations for vertical video and display advertising.

1. Aspect Ratio Dimensions Calculator

Quick Presets:
Exact Ratio
9:16 (0.5625)
Total Megapixels
2.07 MP
Orientation
Vertical (Portrait)

2. Letterbox / Pillarbox Padding Calculator

Calculate exact black bar padding needed when placing horizontal video (16:9) inside a vertical frame (9:16) without stretching or distortion.

Scaling 1920×1080 into 1080×1920:
• Scaled video height: 608 px (centered)
• Top letterbox bar: 656 px
• Bottom letterbox bar: 656 px
• Optimal safe zone: Place your text within the middle 608px video band.
1

9:16 Vertical Standard

1080×1920 is standard for TikTok, Reels, and Shorts. Always edit in 1080p or 4K (2160×3840) to maximize algorithmic quality scoring.

2

Check UI Danger Margins

Aspect ratio alone does not guarantee safety. Test your video in the Safe Zone Checker to avoid button obstruction.

3

No Letterboxing for Ads

Platforms penalize heavy letterboxing in paid ads. Use native 9:16 footage for Meta Advantage+ and TikTok ad placements.