Find out how long you can record on your memory card. Enter the card size and your camera's bitrate, then get the recording time with a safety reserve factored in.
Card & recording settings
Quick presets by resolution
5%
Ctrl+Enter to calculate (Cmd+Enter on Mac)
Example Output
Recording Time
2h 50m
Total recording time (no reserve)
After reserve
2h 42m
Per minute
752 MB
Usable space
121.60 GB
Reserved
6.40 GB
Card Usage
0 GB128 GB
Usable
Reserve
Example: 128 GB SD card recording 4K video at 100 Mbps. Enter your own values and click Calculate to see your personalised result.
Recording Time
0h 00m
Total recording time (no reserve)
After reserve
0h 00m
Per minute
0 MB
Usable space
0 GB
Reserved
0 GB
Card Usage
0 GB128 GB
Usable
Reserve
Card sizes use decimal GB (1 GB = 1,000,000,000 bytes), matching how manufacturers label cards. Actual formatted capacity may be slightly less.
How to Use
Step 1
Pick your card size
Use a preset button or type a custom size. This is the capacity printed on your memory card (SD, microSD, CFexpress, etc.).
Step 2
Set your bitrate
Enter your camera's video bitrate in Mbps, or use a resolution preset. Check your camera's recording menu for the exact number. Audio bitrate defaults to 320 kbps.
Step 3
Review your recording time
Hit Calculate to see how long you can record. The safety reserve sets aside a percentage of the card so you never run out mid-shot.