Video Recording Time Calculator
Fill in the values and the answer updates as you type.
How the Video Recording Time Calculator works
Recording time = card size in megabits ÷ bitrate. One gigabyte is 8,000 megabits, and bitrates are quoted in megabits per second. Audio adds a little more, and cards also reserve some space for file tables. Many cameras split long clips into 4 GB or 30 minute files, which does not change the total. Example: A 256 GB card at 100 Mbps records about 5 h 41 min, using 750 MB every minute.
Inputs and results
The Video Recording Time Calculator takes 2 inputs and gives 3 results.
What you enter
- Memory card size (GB) — starts at 256.
- Video bitrate (Mbps) — starts at 100.
What you get
- Recording time
- Recording time (minutes)
- Storage used per minute (MB)
Example: Video Recording Time Calculator with the starting values
With memory card size 256 GB and video bitrate 100 Mbps, the calculator returns:
| Recording time | 5 h 41 min |
|---|---|
| Recording time (minutes) | 341 |
| Storage used per minute (MB) | 750 |
Change any value above and the results update straight away.
Video Recording Time Calculator FAQ
How do I use the Video Recording Time Calculator?
Enter memory card size and video bitrate in the fields, then read recording time, recording time (minutes) and storage used per minute (mb) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Video Recording Time Calculator calculate?
How many hours of video fit on a card at a given bitrate. It returns recording time, recording time (minutes) and storage used per minute (mb) from the 2 values you provide.
What values does the Video Recording Time Calculator start with?
It opens with memory card size 256 GB and video bitrate 100 Mbps so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Video Recording Time Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Video Recording Time Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.