TB to GB Converter
Quick answer: To convert TB to GB, multiply by 1,000. For example, 10 TB is 10,000 GB. One terabyte equals 1,000 GB.
- Calculator
- Formula
- Examples
- Size compared
- About the units
- Where used
- Step by step
- Popular conversions
- Reading your result
- Mistakes
- FAQ
- Related tools
- Method
Use the TB to GB Converter
TB to GB formula and what each symbol means
GB = TB × 1,000
| Symbol | Meaning |
|---|---|
| TB | Terabyte |
| GB | Gigabyte |
TB to GB examples
1 TB
1 TB × 1,000 = 1,000 GB.
10 TB
10 TB × 1,000 = 10,000 GB.
100 TB
100 TB × 1,000 = 100,000 GB.
TB compared with GB
One TB is 1,000 times as large as one GB, so your number gets bigger when you convert TB to GB and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About TB and GB
Terabyte (TB): 10¹² bytes. Gigabyte (GB): 10⁹ bytes.
Where TB to GB 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 TB to GB step by step
- Enter the value in TB (the starting unit).
- Multiply by 1,000, because 1 TB = 1,000 GB.
- The product is the value in GB. To go back, divide by 1,000 or multiply by 0.001.
Popular data storage conversions
How to read your TB to GB result
A byte is 8 bits.
| TB | GB |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
GB to TB: quick table
| GB | TB |
|---|---|
| 1 | 0.001 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
Common mistakes when calculating TB to GB
- 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 TB to GB multiply by 1,000; from GB to TB divide by 1,000.
TB to GB FAQ
How many GB are in 1 TB?
1 TB equals 1,000 GB.
How many TB are in 1 GB?
1 GB equals 0.001 TB.
Is 1 TB = 1,000 GB an exact conversion?
Yes. The terabyte and the gigabyte are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 1,000 is just that ratio shown to 7 significant figures.
What is a gigabyte (GB)?
10⁹ bytes.
How can I estimate TB to GB in my head?
One TB is 1,000 times as large as one GB, so your number gets bigger when you convert TB to GB and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
What is 3 TB in GB?
3 TB = 3,000 GB (since 3 × 1,000).
What is 30 TB in GB?
30 TB = 30,000 GB (since 30 × 1,000).
What is 150 TB in GB?
150 TB = 150,000 GB (since 150 × 1,000).
How many decimals should I keep when converting TB to GB?
Match the precision of your original measurement. For example, 10,000 GB rounds to 10,000 GB at 3 significant figures; keep more digits only for engineering or scientific work.
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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