Data Size Converter
Why your 1 TB drive shows 931 GB.
Drive makers count in 1000s (1 GB = 1,000,000,000 bytes); many operating systems count in 1024s (GiB). That gap is why a new drive looks smaller.
Results are estimates for general information, not medical or financial advice.
How it works
- Enter your values The result updates as you type.
- Switch units if needed Metric or US units, where it applies.
- Read the result Nothing is stored or sent anywhere.
FAQ
Is it free?
Yes. No account, no limits.
Is my data stored?
No. The calculation happens in your browser and nothing is sent to a server.