Convert Megabits per Second to Gigabits per Second - Data Transfer Converter
This converter translates data transfer rates expressed in megabits per second (Mbps) to gigabits per second (Gbps). It is intended for network engineers, IT teams, researchers, and anyone who needs a fast, standards-aligned conversion for planning or reporting.
By default the tool follows SI (decimal) prefixes where 1 Giga = 10^9 and 1 Mega = 10^6, which is the convention used in official metrology and many regulatory contexts for broadband speed reporting.
If you require binary-prefixed conversions (mebibits, gibibits) for low-level storage or memory calculations, consult the glossary below or use the related converter for binary units.
Governance
Record 6f773be4b477 • Reviewed by Fidamen Standards Committee
Interactive Converter
Convert between megabit per second and gigabit per second with precision rounding.
Quick reference table
| Megabit per Second | Gigabit per Second |
|---|---|
| 1 Mbps | 0 Gbps |
| 5 Mbps | 0.01 Gbps |
| 10 Mbps | 0.01 Gbps |
| 25 Mbps | 0.03 Gbps |
| 50 Mbps | 0.05 Gbps |
| 100 Mbps | 0.1 Gbps |
Methodology
The conversion uses SI-consistent decimal prefixes: 1 Gbps = 1,000 Mbps. This is the accepted practice for communications link rates and most regulatory and vendor specifications.
We explicitly separate decimal (Gbps/Mbps) from binary-prefixed units (Gibit/Gibibit) where 1 Gibibit = 2^30 bits; those binary conversions are not applied here unless you select a binary units tool.
Displayed values are exact mathematical conversions. For real network measurements, account for protocol overhead, encoding, measurement tool resolution, and test conditions when interpreting speed figures.
Key takeaways
Use this converter for fast, SI-compliant conversions between Mbps and Gbps using the decimal factor (1 Gbps = 1000 Mbps).
For reporting to regulators or in contracts, confirm the unit convention (decimal vs binary) required by the receiving party; many standards and government resources reference SI decimal prefixes.
Worked examples
250 Mbps → 0.25 Gbps (250 ÷ 1000 = 0.25)
1,000 Mbps → 1 Gbps (1000 ÷ 1000 = 1)
10,000 Mbps → 10 Gbps (10000 ÷ 1000 = 10)
F.A.Q.
What is the exact relationship between Mbps and Gbps?
Using SI decimal prefixes: 1 Gbps = 1,000 Mbps. Therefore divide Mbps by 1000 to get Gbps.
When would I use 1024 instead of 1000?
The 1024 factor applies to binary-prefixed units (mebibit, gibibit). Use 1024 for conversions involving Mibibits/Gibibits (Mi/Gi), which are relevant in memory/storage contexts. For network link rates and most broadband reporting, use 1000 per SI.
Does this conversion account for protocol overhead or real-world speeds?
No. This tool provides a pure unit conversion. Real-world throughput will be lower than link-rate due to protocol overhead (headers, retransmissions, flow control), encoding schemes, and measurement method. Use active throughput tests and account for overhead when sizing links.
How many decimal places should I report?
For engineering and reporting purposes, 2–3 significant digits are common (e.g., 0.25 Gbps). For SLA or regulatory reporting follow the formatting rules required by the contract or authority; otherwise round to a precision that reflects measurement accuracy.
Which standard should I cite for prefix definitions?
Use SI prefix definitions as maintained by national metrology institutes. See NIST and international SI documentation for authoritative guidance.
Are Mbps and MBps the same?
No. Mbps is megabits per second (bit = lower-case b). MBps is megabytes per second (byte = upper-case B) and equals 8 times the bit rate (1 MBps = 8 Mbps), ignoring overhead.
Can I use this conversion for legal or compliance reporting?
This converter follows SI (decimal) conventions and is suitable for many reporting needs. For formal regulatory or contractual submissions, confirm the required unit conventions and measurement methodology with the governing agency or contract terms.
Sources & citations
- NIST — The International System of Units (SI) and prefixes — https://www.nist.gov/pml/weights-and-measures/metric-si
- Federal Communications Commission — Understanding Broadband Speed — https://www.fcc.gov/consumers/guides/understanding-broadband-speed
- MIT OpenCourseWare — Computer and network engineering resources — https://ocw.mit.edu
- 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: 6f773be4b477What changed (latest)
v1.0.0 • 2025-11-11 • 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 • 2025-11-11 • 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 11, 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 • 2025-11-11 • 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: b5a762d25422