GB to TB Converter
Quick answer: To convert GB to TB, multiply by 0.001. For example, 10 GB is 0.01 TB. One gigabyte equals 0.001 TB.
- Calculator
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- Size compared
- About the units
- Where used
- Step by step
- Popular conversions
- Reading your result
- Mistakes
- FAQ
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- Method
Use the GB to TB Converter
GB to TB formula and what each symbol means
TB = GB × 0.001
| Symbol | Meaning |
|---|---|
| GB | Gigabyte |
| TB | Terabyte |
GB to TB examples
1 GB
1 GB × 0.001 = 0.001 TB.
10 GB
10 GB × 0.001 = 0.01 TB.
100 GB
100 GB × 0.001 = 0.1 TB.
GB compared with TB
One TB is 1,000 times as large as one GB, so your number gets smaller when you convert GB to TB and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About GB and TB
Gigabyte (GB): 10⁹ bytes. Terabyte (TB): 10¹² bytes.
Where GB to TB conversions are used
Drive, phone and cloud-storage sizes are given in gigabytes or terabytes, while operating systems may show gibibytes. File sizes for email, uploads and downloads are quoted in kilobytes and megabytes.
How to calculate GB to TB step by step
- Enter the value in GB (the starting unit).
- Multiply by 0.001, because 1 GB = 0.001 TB.
- The product is the value in TB. To go back, divide by 0.001 or multiply by 1,000.
Popular data storage conversions
How to read your GB to TB result
A byte is 8 bits.
| GB | TB |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
TB to GB: quick table
| TB | GB |
|---|---|
| 1 | 1,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
Common mistakes when calculating GB to TB
- Treating 1 KB as 1,024 bytes: under the SI/IEC convention 1 kB is 1,000 bytes and 1 KiB is 1,024.
- Dividing when you should multiply: from GB to TB multiply by 0.001; from TB to GB divide by 0.001.
GB to TB FAQ
How many TB are in 1 GB?
1 GB equals 0.001 TB.
How many GB are in 1 TB?
1 TB equals 1,000 GB.
Is 1 GB = 0.001 TB an exact conversion?
Yes. The gigabyte and the terabyte are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 0.001 is just that ratio shown to 7 significant figures.
What is a terabyte (TB)?
10¹² bytes.
How can I estimate GB to TB in my head?
One TB is 1,000 times as large as one GB, so your number gets smaller when you convert GB to TB and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
What is 500 GB in TB?
500 GB = 0.5 TB (since 500 × 0.001).
What is 15 GB in TB?
15 GB = 0.015 TB (since 15 × 0.001).
What is 75 GB in TB?
75 GB = 0.075 TB (since 75 × 0.001).
How many decimals should I keep when converting GB to TB?
Match the precision of your original measurement. For example, 0.01 TB rounds to 0.01 TB at 3 significant figures; keep more digits only for engineering or scientific work.
More in Data Storage converters
- KB to GB Converter
- GB to Bytes Converter
- KB to MB Converter
- GB to Bits Converter
- KB to TB Converter
- MB to Bits Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST: prefixes for binary multiples, NIST SP 811, Appendix B.8: conversion factors