How many Megabytes (MB) are in a Gigabyte (GB)?

In standard binary computing (base-2), 1 Gigabyte equals 1,024 Megabytes. In decimal commercial storage (base-10 used by HDD/SSD manufacturers), 1 GB is represented as 1,000 MB.

What is the difference between a Bit (b) and a Byte (B)?

A Bit is the smallest unit of digital data (0 or 1), while a Byte equals 8 bits. Network bandwidth is usually measured in bits per second (e.g., 100 Mbps), whereas disk files are measured in Bytes (e.g., 12.5 MB/s).

How many Terabytes (TB) are in a Petabyte (PB)?

1 Petabyte (PB) equals 1,024 Terabytes (TB), or 1,048,576 Gigabytes (GB).

Why do hard drives show less capacity in Windows than advertised on the box?

Storage drive manufacturers sell drives using decimal math (1 TB = 1,000,000,000,000 bytes), while operating systems like Windows calculate storage in binary gibibytes (1 TiB = 1,099,511,627,776 bytes). Thus, a 1 TB drive shows as approximately 931 GB in Windows.

Converters

Data Storage Converter

Convert digital storage units between Bytes, KB, MB, GB, TB, PB, and Bits instantly.

Quick Answer & Summary

A data storage converter calculates digital file sizes and memory capacities across Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), and Petabytes (PB). 1 Byte = 8 bits, 1 KB = 1,024 Bytes, 1 MB = 1,024 KB, and 1 GB = 1,024 MB.

Binary Computing Storage Hierarchy

Uses binary computer architecture factors (powers of 2: 2^10 = 1024) for standard computing memory and storage.

From

Result

0.0009765625

1 Megabytes = 0.0009765625 Gigabytes

Quick Conversion Reference Tables

Megabytes Gigabytesmb → gb

Megabytes (mb)	Gigabytes (gb)
256 mb	0.25 gb
512 mb	0.5 gb
1,024 mb	1 gb
2,048 mb	2 gb
4,096 mb	4 gb
8,192 mb	8 gb
16,384 mb	16 gb
32,768 mb	32 gb
65,536 mb	64 gb

Gigabytes Terabytesgb → tb

Gigabytes (gb)	Terabytes (tb)
128 gb	0.125 tb
256 gb	0.25 tb
500 gb	0.488 tb
512 gb	0.5 tb
1,000 gb	0.977 tb
1,024 gb	1 tb
2,000 gb	1.953 tb
2,048 gb	2 tb
4,096 gb	4 tb

Kilobytes Megabyteskb → mb

Kilobytes (kb)	Megabytes (mb)
100 kb	0.098 mb
500 kb	0.488 mb
1,024 kb	1 mb
2,048 kb	2 mb
5,000 kb	4.883 mb
10,000 kb	9.766 mb
50,000 kb	48.828 mb
100,000 kb	97.656 mb

Bits Bytesbit → b

Bits (bit)	Bytes (b)
8 bit	1 b
16 bit	2 b
32 bit	4 b
64 bit	8 b
128 bit	16 b
256 bit	32 b
512 bit	64 b
1,024 bit	128 b

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Systems & Security Engineers • Applied Cryptography & High-Performance Web Tools

Updated: August 2026

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Documentation & Guide

How to Use Data Storage Converter

Input Data Size

Type the file or storage size number in the 'From' field.

Choose Digital Units

Select the starting unit (e.g., Megabytes) and destination unit (e.g., Gigabytes).

Get Instant Binary/Decimal Result

View the exact converted capacity across binary 1024-based storage scales.

Pro Tips

Remember uppercase 'B' is Bytes and lowercase 'b' is bits

Calculates base-2 binary memory values

Practical Examples & Conversions

Input

1024 MB

Output

1 GB

Frequently Asked Questions (PAA)

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Authoritative Standards & Citations

Calculations and algorithms on this page are implemented and verified in strict accordance with the following official technical specifications:

National Institute of Standards and Technology

NIST Special Publication 811: Guide for the Use of the International System of Units (SI)

Authoritative metric, imperial, and astronomical unit conversion factors.

Bureau International des Poids et Mesures

BIPM: The International System of Units (SI Brochure)

The definitive global reference for base and derived scientific measurement units.