Convert Data Storage
Convert bytes, kilobytes, megabytes, gigabytes and terabytes — in both the 1000 and the 1024 sense, which is why your drive looks smaller than the box said.
Runs entirely in your browser — nothing is uploaded
1 GB equals
0.9313225746GiB
1 GB in every unit
- Bits
- 8,000,000,000 bit
- Bytes
- 1,000,000,000 B
- Kilobytes (1000)
- 1,000,000 kB
- Megabytes (1000)
- 1,000 MB
- Gigabytes (1000)
- 1 GB
- Terabytes (1000)
- 0.001 TB
- Kibibytes (1024)
- 976,562.5 KiB
- Mebibytes (1024)
- 953.6743164 MiB
- Gibibytes (1024)
- 0.9313225746 GiB
- Tebibytes (1024)
- 0.0009094947 TiB
Why a 1 TB drive shows as 931 GB
Because two different units share a name. The manufacturer sells a terabyte meaning 1,000,000,000,000 bytes. Windows reports in units of 1,024, calls them GB anyway, and 1012 bytes is 931.32 of those.
Nothing is missing and nobody is lying. The drive holds exactly what the box says; the operating system is describing it with a different sized unit and the same three letters.
The 1024 units have their own names
They were given proper names in 1998 to end exactly this confusion: kibibyte, mebibyte, gibibyte, tebibyte — KiB, MiB, GiB, TiB. A gibibyte is 1,073,741,824 bytes.
Both sets are in this converter, labelled with the number they actually mean. Linux and macOS have largely adopted the correct names; Windows has not, which is why the confusion persists on the platform where most people meet it.
Bits and bytes are not the same, and your broadband bill knows it
Eight bits to a byte. Internet connections are sold in megabits per second and files are measured in megabytes, so a 100 Mb/s connection downloads at about 12.5 MB/s at best.
The capital letter is the whole difference: Mb is megabits, MB is megabytes. It is not an accident that the faster-sounding unit is the one used in advertising.
Nothing is sent anywhere
Every conversion on this page is arithmetic done in your own browser. No request is made, nothing is stored between visits, and the page keeps working with the connection switched off — which is a reasonable way to check the claim.
Frequently asked questions
How many MB in a GB?
1,000 if you mean the decimal gigabyte a drive manufacturer sells, or 1,024 if you mean the gibibyte your file manager is probably showing while calling it GB. Both rows are in the table so you can see which one your figure came from.
Why does my phone show less storage than advertised?
Two reasons compounding. The decimal-versus-binary gap accounts for around seven per cent, and the operating system itself occupies several gigabytes before you install anything. A 128 GB phone commonly leaves about 110 GB usable.
How long will a download take?
Divide the file size in megabytes by one eighth of your connection speed in megabits. A 700 MB file on a 100 Mb/s line takes about 56 seconds at full speed, which you will not get.
Is anything sent anywhere?
No. The arithmetic happens in this tab and the page works offline.