Gigabits to Megabytes Converter

Convert between gigabits (Gb) and megabytes (MB) for data transfer and storage calculations. Supports both binary (1024-based) and decimal (1000-based) systems.

Conversion system:

Binary is standard for computing; decimal is often used in marketing

Binary Conversion Factor:

1 Gigabit (Gb) = 128 Megabytes (MB) | 1 Megabyte (MB) = 0.0078125 Gigabits (Gb)

MB = Gb × 128 | Gb = MB ÷ 128 (since 1 byte = 8 bits and 1 GB = 1024 MB)

Gb

Accepts decimal values (e.g., 2 Gb = 256 MB in binary system)

MB

Display format:

Quick conversions (binary system) - click to auto-fill:

Share This Tool

Useful for data calculations? Share with colleagues:

About Gigabits and Megabytes

Units for measuring digital data - one for transfer speed, one for storage capacity

Gigabit (Gb)

  • Unit of digital information transfer rate (1 Gb = 1 billion bits)
  • Used for measuring network speeds (internet, Ethernet, fiber connections)
  • Binary: 1 Gb = 1024 Mb (megabits) | Decimal: 1 Gb = 1000 Mb
  • 1 gigabit = 125 megabytes (decimal) or 128 megabytes (binary)
  • Common in internet plans (e.g., "1 Gbps" = 1 gigabit per second)

Megabyte (MB)

  • Unit of digital storage capacity (1 MB = 1 million bytes)
  • Used for measuring file sizes, memory, and storage space
  • 1 byte = 8 bits | Binary: 1 MB = 1024 KB | Decimal: 1 MB = 1000 KB
  • 1 megabyte = 0.008 gigabits (decimal) or 0.0078125 gigabits (binary)
  • Common for documents, photos, and small applications

Binary vs Decimal Systems Comparison

Key differences in data measurement systems:

Conversion Binary (1024-based) Decimal (1000-based) Typical Use Case
1 Gigabit to Megabytes 128 MB 125 MB File transfer calculations
1 Megabyte to Gigabits 0.0078125 Gb 0.008 Gb Bandwidth requirements
8 Gigabits to Megabytes 1024 MB (1 GB) 1000 MB Storage vs transfer equivalence
100 Gigabits to Megabytes 12,800 MB 12,500 MB Network capacity planning

Gigabits to Megabytes Conversion Table

Common data conversions for networking, storage, and file transfers

Gigabits (Gb) = Binary Megabytes (MB) Decimal Megabytes (MB) Practical Context
0.1 Gb = 12.8 MB 12.5 MB Small photo transfer
0.5 Gb = 64 MB 62.5 MB Document collection
1 Gb = 128 MB 125 MB Basic conversion reference
5 Gb = 640 MB 625 MB High-quality video clip
8 Gb = 1024 MB (1 GB) 1000 MB 1 GB file download
10 Gb = 1280 MB 1250 MB HD movie segment
100 Gb = 12,800 MB 12,500 MB Large data backup

Binary system (1024-based) is used in computing; decimal (1000-based) is often used in marketing and consumer electronics

Frequently Asked Questions

Common questions about gigabit and megabyte conversions

How do I convert gigabits to megabytes?

To convert gigabits to megabytes, you need to account for two factors:

  1. The difference between bits and bytes (1 byte = 8 bits)
  2. Whether you're using the binary (1024-based) or decimal (1000-based) system

Binary system (computing standard): MB = Gb × (1024 / 8) = Gb × 128

Decimal system (marketing): MB = Gb × (1000 / 8) = Gb × 125

Example: Converting 2 gigabits to megabytes

Binary: 2 Gb × 128 = 256 MB

Decimal: 2 Gb × 125 = 250 MB

What's the difference between gigabits and gigabytes?

The key difference is the unit base (bit vs byte) and their typical uses:

Aspect Gigabit (Gb) Gigabyte (GB)
Base Unit Bit (smallest unit of data) Byte (8 bits = 1 byte)
Symbol Gb GB
Typical Use Network speeds, data transfer rates Storage capacity, file sizes
Conversion 1 GB = 8 Gb (exact, since 1 byte = 8 bits)
Example "1 Gbps internet" (speed) "1 GB file" (size)
Why are there two conversion systems (binary and decimal)?

The two systems exist for historical and practical reasons:

  • Binary system (1024-based): Used in computing because computers use binary (base-2) logic. 1024 is 2¹⁰, making it convenient for memory addressing and data storage calculations.
  • Decimal system (1000-based): Used in marketing and consumer electronics because people are more familiar with decimal (base-10) systems. It makes storage capacities and speeds appear larger (e.g., a "1 TB" drive in marketing is 1000 GB, but your computer sees it as ~931 GB).

This discrepancy causes confusion, but our converter supports both systems to match your needs.

When would I need to convert gigabits to megabytes?

Conversions between gigabits and megabytes are common in these scenarios:

  • Calculating download/upload times (e.g., "How long to download a 500 MB file on a 1 Gbps connection?")
  • Understanding internet plan capabilities (e.g., "What's the maximum file size I can transfer in 1 minute?")
  • Network capacity planning (e.g., "How much bandwidth do I need to stream 4K video?")
  • Storage vs. transfer comparisons (e.g., "How much data can I back up in an hour?")
  • Verifying advertised speeds vs. actual performance (e.g., "Is my '1 Gbps' connection delivering 128 MB/s?")
Why is the 8x factor used in bit-to-byte conversions?

The 8x factor comes from the definition of a byte in computing:

1 byte = 8 bits

This standard dates back to the early days of computing when 8 bits became the standard for representing a single character (letter, number, or symbol) in binary code. While other byte sizes have existed historically, 8-bit bytes (octets) are now universal.

This is why converting between bits (used for transfer rates) and bytes (used for storage) always involves multiplying or dividing by 8, regardless of whether you're using binary or decimal systems.

More Data Storage Converter Tools

Data Storage Converter | Convert GB, MB, KB, TB, Bytes Online Free

kB to MB

kB to MB, Kilobytes to Megabytes, kB to MB converter, kilobytes to megabytes calculator, data storage conversion

Free online kB to MB converter. Instantly convert kilobytes to megabytes with our accurate tool. Learn the conversion formula, examples, and reference tables.

Try Converter

MB to GB

mb to gb, convert mb to gb, megabytes to gigabytes, storage converter, data size converter, mb to gb calculator

Accurate MB to GB converter (1 GB = 1024 MB). Easily convert megabytes to gigabytes for storage, data transfer, and file size calculations. Instant results, no registration.

Try Converter

kb to gb

KB to GB, kilobytes to gigabytes, data storage converter, digital size conversion, kilobytes to gb, kb a gb

Accurately convert kilobytes to gigabytes (KB to GB) with our free online calculator for data storage measurements.

Try Converter

bytes to gb

bytes to gb, gb to bytes, data converter, storage conversion, binary conversion, bytes to gigabytes, byte to giga byte, b to gb

Accurately convert bytes to gigabytes (GB) and gigabytes to bytes using binary or decimal standards for data storage calculations.

Try Converter

mb to kb

MB to KB, megabytes to kilobytes, how many KB in 1 MB, data conversion, storage converter, MB to KB calculator, mb in kb, mb to kbytes, megabyte to kilobyte, mb kb

Accurately convert MB to KB (megabytes to kilobytes) with our free online calculator. Learn how many KB are in 1 MB, get instant results for data storage/transfer needs.

Try Converter

gb to mb

GB to MB, gigabytes to megabytes, how many MB in 1 GB, GB to MB converter, storage conversion, data size calculator, gb in mb, gb in to mb, giga byte to mega byte, gig to mb, gb to megabytes

Convert GB to MB (gigabytes to megabytes) with our accurate calculator. Learn how many MB are in 1 GB (1024 MB binary or 1000 MB decimal) for storage measurements.

Try Converter

gig to kilobytes

gb to kb, kb to gb, storage converter, unit conversion, gigabyte to kilobyte, gig to kilobytes, gb to kbytes, gig to kb, 1gb to kb

Convert between Gigabytes and Kilobytes with this accurate storage unit converter. Supports both directions and provides detailed conversion information.

Try Converter

meg to bytes

Megabytes to bytes, MB to B, meg to bytes, data storage converter, digital units conversion, mb to bytes, megabyte bytes, convert mb to bytes

Convert megabytes (MB) to bytes (B) and vice versa for data storage measurements in computing, file sizes, and digital storage.

Try Converter

gigabit to megabyte

gigabit to megabyte, Gb to MB, gigabits to megabytes conversion, data converter, Gb to MB calculator, bit to byte conversion, gbit to mbyte

Convert gigabits (Gb) to megabytes (MB) and vice versa for data transfer and storage calculations, with explanations of binary vs decimal systems.

Try Converter

Tools

Converter

Calculator

Need a Custom Tool or Calculator?

Don't see the tool you need? Let us know via email, and we'll consider adding it.

869241891@qq.com