Storage Calculator
Calculate total storage needed for a quantity of items at a given size each - e.g. how much space 5,000 photos at 4MB each require.
Enter how many items you have and the size of each - this tool calculates the total storage required, with a decimal/binary unit choice.
Manufacturers state capacity using decimal (1 GB = 1,000,000,000 bytes) multiples; operating systems commonly display it using binary (1 GiB = 1,073,741,824 bytes) multiples - which is why a "2 TB" drive shows as roughly 1.82 TB in your OS. Both figures are shown so you can see the difference.
For converting a single value between size units instead of calculating a total, see the Byte Converter or KB/MB/GB/TB Converter.
What Does This Tool Calculate?
Given a quantity of identical (or average-sized) items and the size of each one, this multiplies them together to estimate the total storage space required - useful for planning how much disk space, cloud storage, or backup capacity you'll need.
How to Use It
- Enter the number of items (photos, videos, files, etc.).
- Enter the average size of one item, with its unit.
- Choose decimal or binary convention for the result.
- View the total storage required.
Limitations
This assumes all items are the same size (or you're using a reasonable average) - real file sizes vary, so treat the result as a planning estimate rather than an exact prediction.