AI Video Aspect Ratio Calculator

Convert ratios + get exact pixel dimensions for AI video generation (Sora, Runway, Pika, Kling, Seedance, Veo, Luma)

Calculate

Width
1920
Height
1080
Total pixels
2.1M

One-click platform presets

Quick guide

  • YouTube / 横屏视频: 16:9 at 1920×1080 (1080p) or 3840×2160 (4K)
  • TikTok / Reels / Shorts: 9:16 at 1080×1920 (most AI models recommend this)
  • Instagram feed (vertical): 4:5 at 1080×1350 = best engagement
  • Square Instagram: 1:1 at 1080×1080
  • Cinematic film: 21:9 at 2560×1080 (anamorphic look)