Estimates

File Size (MB)
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File Size (GB)
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Files per 1 Terabyte
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Download / Upload Times

  • 10 Mbps --
  • 25 Mbps --
  • 100 Mbps --
  • 1 Gbps (1000 Mbps) --

The Video File Size Calculator helps you estimate how large a video file will be based on its duration, video bitrate, and audio bitrate. This is useful when preparing videos for uploading, streaming, or storage management. By entering the video duration and quality settings, you can quickly calculate the expected file size and transfer times at different internet speeds.

How It Works

  1. Enter the video duration (hours, minutes, seconds).
  2. Select a quality preset or enter custom video and audio bitrates.
  3. The calculator estimates file size in MB and GB.
  4. It also shows how many such files fit in 1 TB of storage.
  5. Additionally, it calculates upload or download times for common internet speeds.

Formula Used

File Size (MB) = ((Video Bitrate × Duration in seconds) + (Audio Bitrate × Duration in seconds)) ÷ 8 ÷ 1024

This formula converts bitrate (in bits per second) into megabytes for the full duration of the video.

Example Calculation

  • Duration: 10 minutes
  • Video Bitrate: 8 Mbps
  • Audio Bitrate: 192 kbps
  • Estimated File Size: ~586 MB (0.57 GB)
  • Files per 1 TB: ~1,747
  • Upload/Download Time at 25 Mbps: ~3 minutes 16 seconds

Why This Calculator is Useful

  • Helps plan storage for large video projects.
  • Estimates internet bandwidth requirements for streaming or uploading.
  • Prevents unexpected file size issues before rendering videos.

FAQs

What is video bitrate? Video bitrate is the amount of data processed per second in a video stream. Higher bitrate means better quality but larger file size.

What is audio bitrate? Audio bitrate determines the quality of sound in a video file. Higher bitrate means clearer audio but adds to the file size.

Does video resolution affect file size? Indirectly, yes. Higher resolutions (e.g., 4K) usually require higher bitrates, which increases file size.

What’s a good bitrate for 1080p video? For standard 1080p HD video, 8–12 Mbps is common for good quality.

Can this calculator predict exact file size? No, it provides an estimate. Actual file size may vary depending on codec, compression, and encoding settings.