Work out how many megabytes are in a gigabyte, or convert file sizes between bytes, KB, MB, GB and TB in a tap.
It runs in your browser with instant results.
How to use the Data Storage Converter
- Enter a value.
- Choose the from and to units.
- See the converted size.
Why your 1 TB drive shows 931 GB
Storage has two counting systems. Manufacturers use decimal, where 1 GB is 1,000,000,000 bytes. Operating systems traditionally count in binary, where 1 GB really means 1 GiB, which is 1,073,741,824 bytes. The gap compounds with size: a decimal terabyte is only 931 binary gigabytes, which is the missing space people search for. Nothing is lost; the units simply differ.
The ladder of units
Each step is 1,024 in binary or 1,000 in decimal: bytes to kilobytes to megabytes to gigabytes to terabytes. Practical anchors: a photo runs 2 to 5 MB, an hour of streamed HD video around 3 GB, and a smartphone backup tens of gigabytes. Also mind bits versus bytes: internet speeds are megabits per second, and 100 Mbps downloads at only 12.5 megabytes per second.
Common uses
- Understanding real capacity of drives and phones
- Converting between MB, GB and TB for storage planning
- Translating internet speeds from bits to bytes
- Estimating how many files fit in a given space
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Frequently asked questions
Is it free?
Yes, free with no signup.
Which units are supported?
Bytes, KB, MB, GB and TB.
Is my input stored?
No. It is converted in your browser.
Does it use 1024 or 1000?
It uses binary multiples (1024) common for storage.