Video File Size Calculator
Planning a shoot or estimating upload times? Enter your video resolution, frame rate, codec, and duration to get a file size estimate. Works for everything from 480p web clips to 8K cinema footage.
Video file size depends on four main factors:
- Resolution -- more pixels means more data per frame
- Frame rate -- 60fps produces roughly twice the data of 30fps
- Codec -- modern codecs like H.265 and AV1 compress 40-50% better than H.264
- Duration -- file size scales linearly with time
The basic formula: File size (MB) = Bitrate (Mbps) x Duration (seconds) / 8
Typical bitrates for H.264 at 30fps:
- 480p: 2.5 Mbps (about 19 MB/min)
- 720p: 5 Mbps (about 38 MB/min)
- 1080p: 8 Mbps (about 60 MB/min)
- 4K: 35 Mbps (about 263 MB/min)
- 8K: 80 Mbps (about 600 MB/min)
Codec comparison at similar quality:
- H.264: baseline (most compatible)
- H.265/HEVC: ~40% smaller files
- VP9: ~35% smaller files
- AV1: ~50% smaller files (slowest to encode)
- ProRes 422: ~4x larger (editing codec, not for delivery)