Convert Tbps to Gbps

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1 Tbps is 1000 Gbps, because a terabit holds a thousand gigabits. Enter a speed in terabits per second and the converter multiplies it by 1,000: 1.6 Tbps is 1,600 Gbps, and the 10.841 Tbps record peak at LINX in 2024 is 10,841 Gbps.

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How many Gbps is 1 Tbps?

One terabit per second is 1000 Gbps. The prefix tera means a trillion and giga a billion[1], so you multiply the figure in terabits by 1,000: Gbps = Tbps × 1000.

In your head, move the decimal point three places to the right or add three zeros. 1.6 Tbps is 1,600 Gbps, 0.8 Tbps is 800 Gbps and 25.6 Tbps is 25,600 Gbps.

What is a terabit per second, and what is a gigabit per second?

A terabit per second is a trillion bits sent every second, and a gigabit per second is a billion[1]. Both units count bits, zeros and ones, and eight bits make a byte[2]. The bits to bytes converter turns bits into bytes.

Terabits describe the traffic of whole networks and the capacity of switches, while equipment is bought as ports of 100, 400 or 800 Gbit/s. That is why the same capacity has to be written both ways. A home connection given in megabits goes through the Mbps to Gbps converter, and a speed in bytes per second through the data transfer rate converter.

Optical panel with a row of numbered green sockets and cages for transceiver modules
An optical panel with numbered sockets. The numbers from 27 to 45 label consecutive sockets in the row, and below them sits a strip of cages for transceiver modules, each position marked with a pair of RX and TX labels. Photo: Kirill Sh, Unsplash.

How many gigabits is the traffic peak at LINX?

The London Internet Exchange, LINX, is where hundreds of networks swap traffic directly with each other. In its review of 2024, LINX reported its highest-ever traffic, a peak of over 10.841 terabits per second, up from 9.229 Tbps in 2023 and 7.424 Tbps in 2022[3].

In gigabits those peaks are 7,424 Gbps, 9,229 Gbps and 10,841 Gbps. The jump from 2022 to 2024 is 3,417 Gbps, which is more than thirty-four 100 Gbps ports running flat out. The same review puts the connected network capacity at 72.91 Tbps in 2024, or 72,910 Gbps[3].

Tbps to Gbps conversion table

The rows cover speeds from 0.001 Tbps, a single gigabit, up to 400 Tbps. Results are given in whole gigabits.
Speed in TbpsThe same in Gbps
0.001 Tbps1 Gbps
0.01 Tbps10 Gbps
0.025 Tbps25 Gbps
0.04 Tbps40 Gbps
0.1 Tbps100 Gbps
0.2 Tbps200 Gbps
0.4 Tbps400 Gbps
0.8 Tbps800 Gbps
1 Tbps1,000 Gbps
1.6 Tbps1,600 Gbps
2 Tbps2,000 Gbps
3.2 Tbps3,200 Gbps
4 Tbps4,000 Gbps
6.4 Tbps6,400 Gbps
8 Tbps8,000 Gbps
10 Tbps10,000 Gbps
12.8 Tbps12,800 Gbps
16 Tbps16,000 Gbps
20 Tbps20,000 Gbps
22 Tbps22,000 Gbps
25.6 Tbps25,600 Gbps
32 Tbps32,000 Gbps
51.2 Tbps51,200 Gbps
100 Tbps100,000 Gbps
120 Tbps120,000 Gbps
180 Tbps180,000 Gbps
200 Tbps200,000 Gbps
250 Tbps250,000 Gbps
352 Tbps352,000 Gbps
400 Tbps400,000 Gbps
The 0.8 and 1.6 Tbps values match the two highest Ethernet speeds[4]. For the speed in megabits, use the Gbps to Mbps converter.
Capacity is built from individual ports, and ports have the speeds set in the Ethernet standards. The rows give eight capacities and the number of ports that make up each of them.
CapacityThe same in Gbps100 Gbit/s ports400 Gbit/s ports800 Gbit/s ports
0.8 Tbps800 Gbps821
1.6 Tbps1,600 Gbps1642
3.2 Tbps3,200 Gbps3284
6.4 Tbps6,400 Gbps64168
12.8 Tbps12,800 Gbps1283216
25.6 Tbps25,600 Gbps2566432
51.2 Tbps51,200 Gbps51212864
102.4 Tbps102,400 Gbps1,024256128
Every row divides by all three port speeds with nothing left over, because every capacity in the table is a multiple of 800 Gbit/s. A round terabit falls between two standard speeds: 800 Gbit/s is 0.8 Tbit/s, and the next step, 1.6 Tbit/s, is twice as big[4].

Which number formats does this converter accept?

The field takes each of these formats and converts it, so you don't need to tidy anything up before pasting. The table shows what the converter does with each one, and the converter itself calculated every result.
What you typeWhat the converter showsNote
11,000 GbpsWe read a bare number as terabits per second, because that is the label on the field.
1.61,600 GbpsThe point marks the decimal part, so this is one point six terabits per second.
1,0001,000,000 GbpsA comma before three digits separates thousands, so we read a thousand terabits. A hint appears below the field, and if you meant one terabit, type 1.
10.841 Tbps10,841 GbpsThis is how LINX wrote its 2024 record. We read the point as the decimal mark, and a hint appears below the field because three digits follow it.
3.2 Tb/s3,200 GbpsTb/s is the same terabits per second, so the field just takes the number.
800 Gbps800 GbpsWe turn gigabits into terabits, so the field shows 0.8, and a note below the field tells you about the conversion.
1 TB/s8,000 GbpsWe turn terabytes per second into terabits, so the field shows 8, and a note below the field tells you about the conversion.
1 1/21,500 GbpsWe read the mixed number as one and a half terabits per second.

How do you work out how many ports a capacity needs?

Capacity is quoted in terabits, but equipment is bought as ports counted in gigabits. The steps use 6.4 Tbps as the example.

  1. Enter the capacity

    Type 6.4 into the Terabits/s field or paste 6.4 Tb/s with its unit. The converter shows 6400 Gbps in the Gigabits/s field.

  2. Divide by the port speed

    6400 Gbps divided by 400 gives sixteen 400 Gbit/s ports. The same figure is eight 800 Gbit/s ports or sixty-four 100 Gbit/s ports.

  3. Check that the figure is in bits

    Port speeds are given in bits and storage array performance in bytes. If the figure comes from a drive description, the right tool is the data transfer rate converter.

  4. Convert the other way

    The Swap order button opens the Gbps to Tbps converter with the result, so 6400 Gbps takes you back to 6.4 Tbps in one click.

Convert other units to Gigabits/s

Mbps to Gbps

Convert Terabits/s to other units

Tbps to Pbps

Sources

  1. Metric (SI) Prefixes — National Institute of Standards and Technology
  2. Byte — Wikipedia
  3. 2024 - A LINX Year in Review — LINX
  4. Terabit Ethernet — Wikipedia
  5. Data-rate units — Wikipedia

Every figure in the tables was computed from the unit definitions and checked arithmetically before publication. Historical values and the names of local units come from the sources listed above.

Content last reviewed: · written and checked by the Arteon team

Frequently asked questions about Tbps and Gbps

Is 1 Tbps 1000 or 1024 Gbps?

It is 1000 Gbps. Terabit and gigabit use SI prefixes, which mean a trillion and a billion[1]. The value 1024 belongs to binary prefixes with their own symbols, Tibit/s and Gibit/s[5].

How many megabytes per second is 1 Tbit/s?

It is 125,000 MB/s, or 125 GB/s, because a byte holds eight bits[2]. The data transfer rate converter does this sum both ways.

Is there a single 1 Tbit/s port?

The Ethernet standards describe two values right next to a terabit: IEEE approved 800 Gbit/s in February 2024, and the 802.3dj project describes 1.6 Tbit/s[4]. A round 1 Tbit/s is not a port speed in those standards.

Is 10 Tbps of traffic 10 TB of data per second?

No. Tbps counts bits and TB counts bytes, so 10 Tbps is 1.25 TB per second. A capital B always means byte, and a byte has eight bits[2].

Arteon free tool screenshot: Convert Tbps to Gbps

Have a question or a suggestion?

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