Video File Size Calculator — Estimate Render File Size

Calculate expected video export file sizes before beginning time-consuming media renders. Input video duration, frame rate, resolution, and target video and audio bitrates to calculate estimated megabytes and gigabytes across MP4, MOV, and WebM formats. Ensure files stay within platform upload limits for YouTube, Discord, and email.

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Video File Size & Bitrate Calculator

Calculate the final file size of your video export, or find the exact bitrate needed to compress a video under a specific file size limit.

Video Duration

Video Bitrate

Mbps
Presets:
Audio Settings (Optional)
kbps
Estimated File Size
0.0MB

Includes 320 kbps audio track

How to Use

  1. 1Enter the total duration of your video footage.
  2. 2Select your target codec and video bitrate (in Mbps or kbps).
  3. 3Get the estimated file size in megabytes (MB) and gigabytes (GB).

Common Use Cases

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    Calculating SD card storage requirements for multi-camera video shoots.

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    Optimizing export bitrate in Premiere Pro or DaVinci Resolve for web streaming.

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    Determining cloud hosting storage budgets for video course platforms.

Got Questions?

Frequently Asked Questions

What formula determines video file size?
File Size = (Video Bitrate + Audio Bitrate) x Duration / 8.
What bitrate should I use for 1080p web video?
For H.264 1080p at 30fps, a bitrate of 8 to 12 Mbps offers great balance.
Does framerate affect file size directly?
File size is strictly governed by total bitrate; higher framerates require higher bitrates to maintain equal quality.

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