---
title: "Gigabytes to Terabytes — GB to TB converter"
description: "1 gigabyte = 0.001 terabytes. Convert gigabytes to terabytes with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/gb-to-tb/
site: "At One Place"
---

# Gigabytes to terabytes

**1 gigabyte in terabytes: 1 GB = 0.001 TB**

TB = GB × 0.001

To convert gigabytes to terabytes, multiply by 0.001. The table below gives the values people look up most often, and the converter works for any number.

## Gigabytes to terabytes table

*Common gigabyte values converted to terabytes.*

| Gigabytes | Terabytes |
| --- | --- |
| 1 GB | 0.001 |
| 2 GB | 0.002 |
| 3 GB | 0.003 |
| 4 GB | 0.004 |
| 5 GB | 0.005 |
| 10 GB | 0.01 |
| 15 GB | 0.015 |
| 20 GB | 0.02 |
| 25 GB | 0.025 |
| 30 GB | 0.03 |
| 40 GB | 0.04 |
| 50 GB | 0.05 |
| 75 GB | 0.075 |
| 100 GB | 0.1 |
| 250 GB | 0.25 |
| 500 GB | 0.5 |
| 1,000 GB | 1 |

## How the conversion works

The relationship is TB = GB × 0.001. Both units measure data, so the conversion is a fixed factor that never changes.

## Common questions

### How many terabytes are in one gigabyte?

One gigabyte equals 0.001 terabytes. TB = GB × 0.001.

### How do you convert gigabytes to terabytes?

Use TB = GB × 0.001. So 10 GB is 0.01 TB.

### How many gigabytes are in one terabyte?

One terabyte equals 1,000 gigabytes, which is the reverse of the conversion above.

## Related pages

- [Terabytes to Gigabytes](https://atoneplace.net/convert/tb-to-gb/)
- [Gigabytes to Bytes](https://atoneplace.net/convert/gb-to-bytes/)
- [Gigabytes to Kilobytes](https://atoneplace.net/convert/gb-to-kb/)
- [Gigabytes to Megabytes](https://atoneplace.net/convert/gb-to-mb/)
- [Gigabytes to Bits](https://atoneplace.net/convert/gb-to-bits/)
- [Gigabytes to Megabits](https://atoneplace.net/convert/gb-to-megabits/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)