All video calculators
Showing 4 of 4 video calculators
SD Card Recording Time Calculator
Find out how long you can record on an SD or microSD card at your camera’s bitrate.
Open tool4K Video Storage Calculator
Plan storage for a 4K shoot: per hour, per day, per week and per month, across every camera.
Open tool8K Video Storage Calculator
Work out how many terabytes an 8K shoot needs - per hour, per day and across the whole project.
Open toolVideo Recording Time Calculator
Turn free storage and a bitrate into recording time - with every step of the formula shown.
Open toolEvery video storage question comes down to one relationship: storage = bitrate × time. Ask it one way and you get recording time for a card; ask it the other and you get terabytes for a production. These calculators do both, and show the working with your numbers.
The part that trips people up is units. Bitrates are in megabits per second, storage is in gigabytes, and a byte is 8 bits - so 100 Mbps fills 45 GB an hour, not 360. Everything here converts for you, and accepts either Mbps or MB/s.
Which video calculator do you need?
- How long a memory card will last in your camera, drone or action camera: the SD card recording time calculator.
- How long any drive, phone or SSD can record at a given bitrate: the video recording time calculator.
- Storage for a 4K shoot in H.264, H.265, ProRes or raw, across cameras and days: the 4K video storage calculator.
- Terabytes per day for an 8K production, including proxies and backups: the 8K video storage calculator.
Where the bitrates come from
ProRes figures are Apple’s published target data rates from its ProRes white paper. H.264, H.265 and raw figures are typical round values, because cameras differ widely - the same “4K 30p” can be 50 Mbps on one camera and 200 Mbps on another. Your camera’s manual or menu has the exact figure, and every calculator lets you enter it.
Storage is shown in decimal units (1 GB = 1,000,000,000 bytes), the way cards and drives are sold. Computers that count in binary GiB show the same space as a slightly smaller number.
Frequently asked questions
How many GB is an hour of video?
Bitrate in Mbps × 0.45. So 10 Mbps is 4.5 GB an hour, 100 Mbps is 45 GB, and ProRes 422 HQ at 4K UHD 29.97p (884 Mbps) is about 398 GB.
What is the difference between Mbps and MB/s?
Mbps is megabits per second; MB/s is megabytes per second. 1 MB/s = 8 Mbps. Camera bitrates are usually in Mbps, card speeds in MB/s.
Are these calculators free?
Yes, with no sign-up. They run in your browser and nothing you enter is uploaded.
Why does my card show less space than its label?
Cards are labelled in decimal gigabytes; many computers count binary gibibytes but call them GB. A 128 GB card shows as about 119 GB. It is the same space, counted differently.