Convert Tbps to Pbps

1,000 Tbps is exactly 1 Pbps. The prefix tera means 10¹² and peta 10¹⁵[1], so a petabit holds a thousand terabits and you divide terabits by a thousand: Pbps = Tbps ÷ 1,000. In practice you move the decimal point three places to the left, so 1 Tbps is 0.001 Pbps and 430 Tbps is 0.43 Pbps.

For the other direction, use the Pbps to Tbps converter, and to turn gigabits into terabits, the Gbps to Tbps converter.

A terabit per second (Tbps, Tb/s or Tbit/s) is a trillion bits every second, and a petabit per second is a quadrillion[1]. Terabits describe the capacity of backbone networks, links between data centres and the fastest optical channels. Petabits appear in experiments in which one fibre carries hundreds of such channels at once.

A terabit is easy to confuse with a terabyte. A byte has eight bits[2], so 1 Tbps is 0.125 TB/s, and the data transfer rate converter turns bits into bytes.

The Internet2 backbone, which interconnects 37 state and regional research networks in the US, supports up to 32 terabits per segment on its optical layer since January 2022, with transponders in steps of 400 to 800 gigabits per second[3]. Type 32 into the field and the converter shows 0.032 Pbps.

In the UK, Jisc says its Janet network carries six petabytes of data each day, and a research-intensive organisation may be connected to it at 100 Gbit/s[6]. Six petabytes spread evenly over the 86,400 seconds of a day come to about 0.56 Tbps, or 0.00056 Pbps, because each byte is eight bits. A daily volume in petabytes is a far smaller speed than a petabit per second.

One petabit would take about 31 Internet2 segments, or 1,250 transponders at 800 Gbps. That gap shows how far networks in service still are from laboratory results, which have already passed a petabit[5].