Convert Bits to Gigabytes - Data Storage Converter
Use this converter to translate a value in bits (b) to gigabytes (GB). It follows the standard SI decimal convention used by storage vendors and many network planning tools.
For contexts that require binary prefixes (GiB), see the methodology notes to understand how the underlying bit-to-byte relationship combines with prefix choices.
Governance
Record 1a672959cc31 • Reviewed by Fidamen Standards Committee
Interactive Converter
Convert between bit and gigabyte with precision rounding.
Quick reference table
| Bit | Gigabyte |
|---|---|
| BIT 1 b | 0 GB |
| BIT 5 b | 0 GB |
| BIT 10 b | 0 GB |
| BIT 25 b | 0 GB |
| BIT 50 b | 0 GB |
| BIT 100 b | 0 GB |
Methodology
Base relationship: 1 byte = 8 bits. Decimal (SI) prefixes use powers of 10, so 1 gigabyte (GB) = 1,000,000,000 bytes.
Conversion path (decimal): bits → bytes (÷8) → gigabytes (÷1,000,000,000). Combined: GB = bits ÷ (8 × 10^9).
Binary context: if you need gibibytes (GiB), use 1 GiB = 1,073,741,824 bytes. The bit-to-byte step remains ÷8; replace the divisor with 1,073,741,824 for GiB.
Key takeaways
Apply GB = bits ÷ (8 × 10^9) for decimal gigabytes; use 1,073,741,824 in place of 10^9 if you need gibibytes.
Worked examples
8,000,000,000 bits → 8,000,000,000 ÷ (8 × 1,000,000,000) = 1 GB.
40,000,000,000 bits → 5 GB (decimal).
8,589,934,592 bits → 1 GiB (binary reference) because 8,589,934,592 ÷ (8 × 1,073,741,824) = 1.
F.A.Q.
Which convention does this tool use by default?
The default is decimal SI prefixes: 1 GB = 1,000,000,000 bytes. Use the binary notes if you need GiB.
Why do some systems show smaller values in GB than I expect?
Many operating systems use binary units (GiB) but label them as GB, leading to smaller displayed numbers. The underlying byte count is the same; the difference is the divisor (1,000,000,000 vs 1,073,741,824).
How should I round for reports?
Keep full precision for calculations. Round to the number of decimal places required by your audience or specification—common practice is 2–3 decimals for summaries and more for engineering or billing.
Sources & citations
- NIST — SI prefixes and unit definitions — https://physics.nist.gov/cuu/Units/prefixes.html
- NIST — Binary prefixes (IEC) reference — https://physics.nist.gov/cuu/Units/binary.html
- ISO/IEC quantities and units overview — https://www.iso.org/standard/43348.html
- IEC 80000-13:2008 — Information science and technology — https://www.iso.org/standard/31898.html
- NIST SP 811 — Guide for the Use of the International System of Units — https://www.nist.gov/pml/special-publication-811
Further resources
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
Record ID: 1a672959cc31What changed (latest)
v1.0.0 • 2025-11-27 • 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
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
What changed (latest)
v1.0.0 • 2025-11-27 • 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 27, 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 • 2025-11-27 • 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: d2b04b25ebcd