Byte size converter & transfer time
Convert between SI (1000) and IEC (1024) units, bits vs bytes, and estimate how long a transfer takes at common speeds.
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Input
All units
| Unit | Value | Family |
|---|---|---|
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Transfer time estimates
Includes ~10% protocol overhead. Real-world speeds vary widely.
| Speed | Time | Note |
|---|---|---|
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About this tool
Hard drive labels use SI terabytes (1 TB = 1,000 GB). Operating systems often display gibibytes. ISPs quote megabits; downloads show megabytes. This converter shows every form side by side so you stop guessing.
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