What is the Video File Size Calculator?
Enter bitrate (Mbps) and duration and get the estimated file size. Compare against platform upload limits: TikTok (287.6MB), Instagram Reels (650MB), YouTube (128GB).
The tool is part of the Calabi free tools hub — a collection of 99+ browser-based utilities for developers, designers, and content creators. Everything runs client-side: your files and data never leave your device.
How to use the Video File Size Calculator
- Step 1: Enter the video bitrate in Mbps.
- Step 2: Set the duration.
- Step 3: Read the estimated file size and platform limits.
The tool updates in real time as you interact with it. No button-clicking required for most tools — results appear instantly.
Example
1080p, 8 Mbps, 60s → approx 60 MB
Privacy & security
The Video File Size Calculator is designed with privacy as a hard constraint, not an afterthought:
- No upload: Your data is processed in your browser's JavaScript engine. No HTTP request is made to any server while you use the tool.
- No account required: The tool works instantly — no email, no sign-up, no cookie consent wall.
- No logging: Calabi does not log what you paste, upload, or generate. The server only delivers the HTML/JS page — it never sees your content.
- Open to inspection: Open your browser's network inspector while using the tool. You'll see zero outbound requests related to your data.
This architecture is particularly important for the AI Creator category of tools, where the inputs often contain sensitive or proprietary information.
Frequently asked questions
Is the Video File Size Calculator free?
Yes, completely free with no account required.
Does it upload my data?
No. The Video File Size Calculator runs entirely in your browser — your data never leaves your device.
Will it work on mobile?
Yes. The tool works on any modern browser on desktop and mobile.
Can I use this for commercial purposes?
Yes, there are no restrictions on commercial use.
About AI creator tools
The Video File Size Calculator is part of the AI creator tools category in the Calabi tools hub. Estimate the file size of a video from its bitrate and duration before you export or upload. All tools in this category run entirely in your browser with no server involvement.