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Source - Gigabyte

Gigabyte (GB) - Definition and Overview

What is Gigabyte?

One Gigabyte is equal to 10^9 or 1000^3 Bytes. Gigabyte is a decimal unit defined as per SI standard. 1 Gigabyte = 1000 Megabytes. The unit symbol for Gigabyte is GB. Gigabyte is not same as Gibibyte (GiB) that contains 1024^3 bytes. 1000 Gigabytes = 1 Terabyte (TB).

Summary

  • A gigabyte is a unit of digital information equal to 1,000,000,000 bytes (10^9)
  • It is a decimal unit defined by the International System of Units (SI)
  • The symbol for gigabyte is GB
  • Gigabytes are commonly used to measure file sizes and storage capacities
  • It is important to distinguish between gigabytes and gibibytes, as the latter is a binary unit equal to 1,073,741,824 bytes (1024^3).

Author Information

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Rajesh V U

Full-Stack Developer & Storage Technologist | Creator of UnitSmash.com
Last updated: September 1, 2026

I am a Storage Technologist with strong experience in enterprise storage systems, Angular development, and web-based tools. I enjoy building practical calculators, converters, and utilities, and I also create original cartoons. I share my tools, articles, and creative work on my personal website, rajeshvu.com.