Convert any amount of data between bits, bytes, KB, MB, GB, TB and PB, in both the 1000-based units drives are sold in and the 1024-based units computers use. See what a drive will really show, how many photos, songs and videos fit, and how long it takes to download.
loading toolHow to use the storage calculator
- Type an amount and choose its unit, for example 1 TB.
- Read it in every other unit; copy any value.
- See what Windows and phones will show, and what fits in that space.
- Type your internet speed to see the download time.
Good to know
- Why does my 1 TB drive show 931 GB? Makers count 1 TB as 1,000,000,000,000 bytes; Windows divides by 1024 three times and still calls the result “GB”.
- Mbps vs MB/s: internet plans are sold in megabits per second. Divide by 8 to get megabytes per second: a 100 Mbps plan downloads about 12.5 MB/s.
- What fits is an estimate: photo, song and video sizes vary with the camera, quality and app.
Questions
What is the difference between GB and GiB?
A GB (gigabyte) is 1,000,000,000 bytes. A GiB (gibibyte) is 1,073,741,824 bytes (1024³). Windows shows GiB values but labels them GB.
How many MB are in a GB?
1,000 MB in a GB by the standard (decimal) definition, or 1,024 MiB in a GiB.
Is the download time exact?
It is the best case at your full speed. Real downloads are usually 10–30% slower because of network overhead and server limits.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
