Data Storage Converter
Convert data sizes in both systems at once. This is the conversion that catches everyone out: a manufacturer's 1 TB drive is a trillion bytes, but your operating system reports it in binary units as about 0.91 TiB — which is why a new drive always looks smaller than the box promised. Both systems are listed side by side here.
1 gigabytes (GB, 1000) =
1,000 megabytes (MB, 1000)
- bits
- 8,000,000,000
- bytes
- 1,000,000,000
- kilobytes (KB, 1000)
- 1,000,000
- gigabytes (GB, 1000)
- 1
- terabytes (TB, 1000)
- 0.001
- kibibytes (KiB, 1024)
- 976,562.5
- mebibytes (MiB, 1024)
- 953.6743
- gibibytes (GiB, 1024)
- 0.93132257
- tebibytes (TiB, 1024)
- 0.00090949
Nothing is uploaded — this tool runs inside your browser, so your files never leave your device.
Why use this tool
- Decimal (KB, MB, GB — 1000) and binary (KiB, MiB, GiB — 1024) side by side
- Explains why a 1 TB drive shows up as 931 GB
- Bits included for bandwidth calculations
- Full conversion table under every answer
How it works
- 1Enter the size you want to convert.
- 2Choose the units — check whether you need decimal or binary.
- 3Read the answer and compare both systems in the table.
Data Storage Converter — frequently asked questions
Because the manufacturer counts 1 TB as a trillion bytes, while Windows reports in binary units of 1,024 but still labels them 'GB'. A trillion bytes really is 931 GiB — no storage is missing, the two are just counting differently.
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