Fidamen

Convert Terabytes to Gigabytes – Data Converter

This converter transforms any terabyte (TB) value into gigabytes (GB) following the SI decimal convention used by drive manufacturers, cloud providers, and billing dashboards.

Because 1 terabyte equals 1,000 gigabytes in decimal notation, the conversion is a single multiplication by 1,000. Use it to reconcile capacity specs, transfer quotas, and archive planning.

Updated Nov 7, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record a894d6d957fb • Reviewed by Fidamen Standards Committee

Interactive Converter

Convert between terabyte and gigabyte with precision rounding.

Quick reference table

TerabyteGigabyte
1 TB8 GB
5 TB40 GB
10 TB80 GB
25 TB200 GB
50 TB400 GB
100 TB800 GB

Methodology

Use the decimal SI definition: 1 TB = 1,000 GB. The converter multiplies the TB input by 1,000 to return GB.

If a workload expects binary units (TiB/GiB), apply 1 TiB = 1,024 GiB. This tool surfaces the decimal baseline; binary guidance is noted for completeness.

Worked examples

1 TB → 1,000 GB

2.5 TB → 2,500 GB

10 TB → 10,000 GB

F.A.Q.

Why does my OS show less than the drive label?

Drive labels use decimal (TB, GB) while many operating systems display binary (TiB, GiB). A 1 TB drive (1,000 GB) appears as about 931 GiB because the OS divides by 1,073,741,824 bytes per GiB.

Should I plan capacity in TB or TiB?

For procurement and vendor specs, TB is standard. For system sizing where the OS reports GiB/TiB, convert with binary factors to align with what the platform shows.

Is overhead considered in this conversion?

No. This is a pure unit conversion. Filesystem metadata, RAID, snapshots, and protocol overhead reduce usable capacity.

Sources & citations

Further resources

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: a894d6d957fb

What changed (latest)

v1.0.0 • 2025-11-07 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

UI

v1.0.0

Governance

Last updated: Nov 7, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

  • MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
  • MINOR: New features or fields that do not change existing outputs for the same inputs.
  • PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

  • Verify formulas and unit definitions against primary standards or datasets.
  • Run golden-case regression suite and edge-case suite.
  • Record reviewer sign-off with credentials and scope.
  • Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

  • Uses exact unit definitions from the Fidamen conversion library.
  • Internal calculations use double precision; display rounding follows the unit's configured decimal places.
  • Not a substitute for calibrated instruments in regulated contexts.
  • Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-07 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 17277603b95e