1 Gigabyte equals 0.001 Terabytes.
| Gigabyte (GB) | Terabyte (TB) |
|---|---|
| 1 GB | 0.001 TB |
| 2 GB | 0.002 TB |
| 4 GB | 0.004 TB |
| 8 GB | 0.008 TB |
| 16 GB | 0.016 TB |
| 32 GB | 0.032 TB |
| 64 GB | 0.064 TB |
| 128 GB | 0.128 TB |
| 256 GB | 0.256 TB |
| 512 GB | 0.512 TB |
| 1,024 GB | 1.024 TB |
| 2,048 GB | 2.048 TB |
To convert Gigabytes to Terabytes, multiply the value by 0.001. This factor comes from the ratio of the two units' definitions: one Gigabyte equals 0.001 Terabytes.
For example: 1 Gigabyte = 0.001 Terabytes, and 10 Gigabytes = 0.01 Terabytes.
To convert in the reverse direction — from Terabytes to Gigabytes — multiply by 1,000.
A gigabyte (GB) in the SI convention equals exactly 1,000,000,000 bytes (10⁹ bytes). The everyday unit of personal computing storage and RAM, the gigabyte has gone from extraordinary to ordinary in under three decades: in 1991, a 1 GB hard drive cost around $3,000 and was considered massive; today, 1 GB is a modest fraction of a smartphone's storage. Modern computers typically have 8–32 GB of RAM and hundreds of gigabytes of SSD storage.
Digital media files that define the gigabyte era: a feature film at 1080p takes 4–15 GB; a video game installation might require 50–100 GB; a 4K Blu-ray disc holds up to 100 GB; and an hour of 4K video shot on a professional camera can fill 50–200 GB. Streaming services compress content dramatically — Netflix streams 4K at about 7 GB/hour — but the underlying uncompressed files are far larger.
Mobile data plans are measured in gigabytes: "10 GB per month" is a typical moderate plan for a smartphone user in many countries. Cloud storage services offer gigabytes of free space (Google Drive gives 15 GB; Dropbox gives 2 GB free). Database sizes for small to medium businesses are typically in the gigabyte range; large enterprise databases reach into the terabytes. The gigabyte thus sits at the sweet spot of human-scale digital data — large enough to matter, small enough to count.
A terabyte (TB) in the SI convention equals exactly 1,000,000,000,000 bytes (10¹² bytes). Consumer hard drives today commonly come in 1, 2, 4, and 8 TB capacities — quantities that would have been unimaginable for most of computing history. The prefix "tera" comes from the Greek "teras" meaning monster or wonder, and the terabyte certainly represents a monstrous amount of data by ordinary human experience.
What fills a terabyte? Roughly 1,000 hours of high-definition video; 250,000 photographs at 4 MB each; or about 17,000 hours of CD-quality music. A single year of personal photos, videos, and documents typically runs to tens or hundreds of gigabytes, meaning a 1 TB backup drive can hold several years of a typical user's digital life. Professional video production, genome sequencing, and scientific simulation generate terabytes routinely.
Cloud storage and enterprise data systems have pushed into the multi-terabyte and petabyte ranges. Google, Amazon, Microsoft, and Meta each store exabytes (millions of terabytes) of data in their data centers. As of recent estimates, the total amount of data stored globally is measured in tens of zettabytes (tens of billions of terabytes) and growing at roughly 23% per year, driven by video surveillance, IoT sensors, and the general digitization of human activity.
1 Gigabyte equals 0.001 Terabytes.
To convert Gigabytes to Terabytes, multiply by 0.001. For example, 100 Gigabytes = 0.1 Terabytes.
1 Terabyte equals 1,000 Gigabytes.