How much data can 1 Gbps transfer in 1 hour? 450 GB at peak

At peak rate, 1 Gbps moves 450 GB in one hour. Use a lower planning number when the link is shared or either disk cannot sustain about 125 MB/s.

A 1 Gbps connection can move 450 GB in one hour at its raw peak rate. That is the inverse of the usual transfer-time question and a useful way to budget backup windows. The 450 GB figure assumes the link stays full for the entire hour with no protocol, storage, or contention losses.

By TechCompare · Updated September 2026

Data amount

450 GB

In 1 hour

Link speed

1 Gbps

Gigabit Ethernet

Time available

1 hour

Maximum transfer window

Data Gigabit Ethernet can move in 1h

450 GB

See how much data Gigabit Ethernet can move in 1 hour. Change the scenario, deadline, or connection model.

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How this is calculated

The calculation multiplies 1,000 Mbps by 3,600 seconds and divides by eight bits per byte. The result is 450 billion bytes, or 450 GB using the calculator's decimal units. A real SMB, NFS, or internet transfer will move less because headers, retransmissions, encryption, and disk speed consume part of the link budget.

Verdict

The raw one-hour capacity is 450 GB, which is enough for many laptop or photo-library backups. Gigabit Ethernet has to sustain its full wire rate for that result. If the workload averages 90% of the link, the moved amount falls to about 405 GB, before any additional storage bottleneck is counted.