Terabits to Gigabits Converter
One Terabit equals 1000 Gigabits (1 Tbit = 1000 Gbit). Multiply a Terabit value by 1000 to get the equivalent in Gigabits. Use the calculator above for your value, or check the examples and reference table below.
Formula
Gbit = Tbit × 1000
Multiply the Terabit value by 1000 to get the equivalent value in Gigabits.
Example Conversions
1 Terabit (Tbit)
1000 Gigabit (Gbit)
5 Terabit (Tbit)
5000 Gigabit (Gbit)
10 Terabit (Tbit)
10000 Gigabit (Gbit)
25 Terabit (Tbit)
25000 Gigabit (Gbit)
100 Terabit (Tbit)
100000 Gigabit (Gbit)
Conversion Table
| Terabit (Tbit) | Gigabit (Gbit) |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
How to Convert Manually
Use these steps to convert Terabit values to Gigabit without the calculator.
- Write down the value in Terabit (Tbit) that you want to convert.
- Multiply that value by 1000.
- For example, 10 Terabits × 1000 = 10000 Gigabits.
- Label the result as Gigabit (Gbit).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Terabit and one Gigabit.
About Terabit and Gigabit
The terabit is an SI decimal data unit equal to 1,000 gigabits, or 125,000,000,000 bytes. Backbone networks and data-center interconnects operate at terabit scales. The gigabit is an SI decimal data unit equal to 1,000 megabits, or 125,000,000 bytes. Fiber connections and modern network hardware operate at gigabit scales. One Terabit equals 1000 Gigabits (1 Tbit = 1000 Gbit). Terabit is used in internet backbone capacity and in data center interconnects. Gigabit is used in fiber internet plans.
Precision and Rounding:This converter keeps SI decimal prefixes (1 KB = 1,000 bytes) separate from IEC binary prefixes (1 KiB = 1,024 bytes). Match the symbol used by your source before converting because some operating-system interfaces display binary quantities with decimal labels.
See our guide to megabits vs. megabytes if you're unsure which one your download speed is quoted in.
Data units follow NIST guidance: decimal SI prefixes use powers of 1,000, while IEC binary prefixes use powers of 1,024 (reference).
Worked Example
15Terabits equals15000Gigabits.
15 Tbit × 1000 = 15000 Gbit
FAQ
How do I convert Terabit to Gigabit?
Multiply the Terabit value by 1000 to get the equivalent value in Gigabits.
What is the formula for Terabit to Gigabit?
The formula is Gbit = Tbit × 1000.
How many Gigabits are in 1 Terabit?
1 Terabit equals 1000 Gigabits.
Can I convert Gigabit back to Terabit?
Yes. 1 Gigabit equals 0.001 Terabits, and the related converter can reverse the calculation.
What are common names for Terabit and Gigabit?
Terabit is shown as Tbit and may also be searched as terabits, tbit. Gigabit is shown as Gbit and may also be searched as gigabits, gbit.
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