How Many GB in a TB?

There are 1,000 GB in a TB (decimal/SI standard) or 1,024 GiB in a TiB (binary standard). Storage manufacturers use decimal; Windows uses binary.

How many gb in a tb? — see the answer and conversion table below.

Use the related converter below for custom values.

Formula

Answer: There are 1,000 GB in a TB (decimal/SI standard) or 1,024 GiB in a TiB (binary standard). Storage manufacturers use decimal; Windows uses binary.

Example

Question: How many GB in a TB? Answer: There are 1,000 GB in a TB (decimal/SI standard) or 1,024 GiB in a TiB (binary standard). Storage manufacturers use decimal; Windows uses binary.

How to Use

  1. Read the direct answer at the top of the page
  2. Check the conversion table for common values
  3. Use the related converter for custom values
  4. Browse the FAQ for common follow-up questions

Frequently Asked Questions

Why does my 2TB drive show only 1.81 TB?

Drive makers use decimal (2 TB = 2,000,000,000,000 bytes), but Windows uses binary. 2TB / 1.0995 = 1.82 TiB.

How many movies fit in 1 TB?

A typical 1080p movie is 4-8 GB. 1 TB holds about 125-250 movies, depending on compression.

What is bigger, a TB or GB?

A TB (terabyte) is 1,000 times bigger than a GB (gigabyte). 1 TB = 1,000 GB.

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Author: Calczy Editorial Team Reviewed by: Calczy Editorial Team Last updated: 2026-09-16

This page was reviewed for accuracy by the Calczy editorial team. Our editorial process follows our editorial policy to ensure reliable, up-to-date conversion tools and reference content.