Gigabyte to Megabyte Converter
Digital storage · unit-converter
Convert Gigabyte to Megabyte with fixed input and output units, a step-by-step formula line, and reference tables. This hub uses decimal byte units (kB, MB, GB, …) and decimal megabits; the main converter also includes binary (KiB, MiB, …) units.
Calculator
From: Gigabyte (gb)
To: Megabyte (mb)
About Gigabyte
The gigabyte (GB) here is a decimal unit: 1 GB = 10⁹ bytes. Storage marketing and many OS dialogs use decimal GB; some systems still show binary (GiB) labels—check context when comparing numbers.
About Megabyte
The megabyte (MB) is 10⁶ bytes (decimal). File sizes and download speeds are often discussed in MB alongside megabits per second (Mb/s) for networks.
How to convert gigabytes to megabytes
1 gigabyte is equal to 1000 megabyte in this tool (values are compared in byte-equivalents):
1 gb = (1,000,000,000 B ÷ 1,000,000 B) mb = 1000 mb
1 GB = 1,000 MB (decimal gigabyte).
Each gigabyte counts as 1,000,000,000 bytes and each megabyte as 1,000,000 bytes, so one gb equals 1,000,000,000 ÷ 1,000,000 mb = 1000 mb.
Let d(gb) be the numeric amount in Gigabyte (gb), and d(mb) the amount in Megabyte (mb). Then:
d(mb) = d(gb) × (1,000,000,000 / 1,000,000)
Equivalently, divide by how many gb fit into one mb (bytes per mb divided by bytes per gb):
d(mb) = d(gb) ÷ 0.001
Or: megabyte = gigabyte ÷ 0.001
Examples
Example #1: Convert 1 gb to megabyte
1 gb = 1 gb × (1,000,000,000/1,000,000) mb = 1000 mb
1 gb = 1 gb ÷ 0.001 = 1000 mb
Example #2: Convert 10 gb to megabyte
10 gb = 10 gb × (1,000,000,000/1,000,000) mb = 10000 mb
10 gb = 10 gb ÷ 0.001 = 10000 mb
Summary
To convert Gigabyte to Megabyte, multiply the value in gb by the ratio of bytes per gb divided by bytes per mb. Equivalently: value_mb = value_gb × (1000000000 / 1000000). Numerically, 1 gb equals 1000 mb.
Relationship context
Both units are byte-based units (decimal SI: kB, MB, GB, …). Factors are fixed relative to one byte, so conversions are exact in floating-point arithmetic for this tool. The factor from Gigabyte to Megabyte is 1.000000e+3 (1 gb = 1000 mb).
Conversion tables
| Gigabyte (gb) | Megabyte (mb) |
|---|---|
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 6 | 6,000 |
| 7 | 7,000 |
| 8 | 8,000 |
| 9 | 9,000 |
| Gigabyte (gb) | Megabyte (mb) |
|---|---|
| 10 | 10,000 |
| 20 | 20,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 60 | 60,000 |
| 70 | 70,000 |
| 80 | 80,000 |
| 90 | 90,000 |
| 100 | 100,000 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- gigabyte to pebibyteGigabyte to Pebibyte
- gigabyte to pebibitGigabyte to Pebibit
- gigabyte to petabitGigabyte to Petabit
- gigabyte to tebibyteGigabyte to Tebibyte
- gigabyte to tebibitGigabyte to Tebibit
- gigabyte to terabitGigabyte to Terabit
- gigabyte to gibibyteGigabyte to Gibibyte
- gigabyte to gibibitGigabyte to Gibibit
- gigabyte to gigabitGigabyte to Gigabit
- gigabyte to mebibyteGigabyte to Mebibyte
- gigabyte to mebibitGigabyte to Mebibit
- gigabyte to kibibyteGigabyte to Kibibyte