Data Storage Converter (MB, GB, TB, GiB)
Convert bits, bytes, KB, MB, GB and TB — and see why a 1 TB drive shows about 931 GB.
Result
How to use
- 1
Type the data size you want to convert.
- 2
Pick the From and To units — or press Swap to flip them.
- 3
See the answer, the formula, every other unit and a ready table of common values.
Questions
Why does my 1 TB hard disk show only 931 GB?
Drive makers use decimal units (1 TB = 10¹² bytes) while Windows counts in binary units (1 GiB = 2³⁰ bytes) but labels them ‘GB’. 10¹² ÷ 2³⁰ ≈ 931.32, so nothing is missing.
What is the difference between MB and MiB?
1 MB (megabyte) = 1,000,000 bytes; 1 MiB (mebibyte) = 1,048,576 bytes (1,024 × 1,024). The ‘i’ units are the binary ones.
Is internet speed in MB or Mb?
Broadband plans in India are sold in megabits per second (Mbps). Divide by 8 for megabytes: a 100 Mbps plan downloads at most about 12.5 MB per second.
About this Data Storage tool
Data Storage Converter (MB, GB, TB, GiB) — Convert bits, bytes, KB, MB, GB and TB — and see why a 1 TB drive shows about 931 GB. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Type the data size you want to convert.
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Results are estimates to help you plan. They are not financial, tax or medical advice.