Data Transfer Calculator

Calculate file transfer times and data capacity, factoring in real-world TCP/IP packet overhead.

File Size

Connection Speed

Bit vs Byte

Network speeds are measured in bits (b). Files are measured in Bytes (B). There are 8 bits in every Byte. Real-world speeds include a ~10% TCP/IP overhead loss.

Real-World Time

Includes 10% TCP/IP framing overhead

Theoretical Time

Perfect conditions (0% loss)

Standard Speed Comparisons

Real-World Estimates

Standard ADSL (10 Mbps) -

Fast Ethernet (100 Mbps) -

Gigabit LAN (1 Gbps) -

10G Fiber (10 Gbps) -

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