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File Size & Download Time Calculator
Convert a file size and estimate how long a download or upload will take at a selected connection speed.
File size
Converted size—
Connection speed
Estimated transfer time—
What affects actual transfer time?
Bits vs bytes
Internet speed uses bits per second. File size normally uses bytes. Eight bits equal one byte.
Overhead
Wi-Fi quality, protocol overhead, server limits and network congestion reduce real speed.
Advertised speed
Your plan's maximum speed may differ from a speed test at the device doing the transfer.