Gigabyte (GB)
A decimal gigabyte (GB) is exactly 1,000,000,000 bytes — one thousand decimal megabytes.
Decimal GB labels phone storage, SSD capacity, and data plan allowances in telecom marketing.
Gigabyte to Megabyte
Convert gigabyte to megabyte instantly. Type in either field — results update live.
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Data Storage Gigabyte Megabyte
1 gigabyte = 1,000 megabytes
Unit
Unit
Conversion table
Selected GB values converted to MB using the exact factor from this tool.
| GB | MB |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 GB = 1000 MB
1 MB = 0.001 GB
To convert gigabyte to megabyte, multiply by 1000.
To convert megabyte to gigabyte, multiply by 0.001.
Example: convert 10 GB to MB
10 × 1000 = 10000 MB
About these units
Short background on the units used in this conversion.
Megabyte (MB)
A decimal megabyte (MB) is exactly 1,000,000 bytes (1,000 KB) — not to be confused with the binary mebibyte (MiB).
Decimal MB sizes photo attachments, app downloads, and cloud storage tiers on many consumer devices.
Frequently asked questions
How many megabytes are in one gigabyte?
One gigabyte equals 1,000 megabytes. Multiply your gigabytes value by 1,000 to convert to megabytes.
What is the conversion formula?
MB = GB × 1,000The reverse is
GB = MB × 0.001, using the same exact factors as this converter.Is this Gigabyte to Megabyte converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All gigabyte conversions
Jump to any data storage conversion starting from gigabyte — including the reverse direction and every other unit in our dataset.
megabyte (MB) → gigabyte (GB)
gigabyte (GB) → byte (B)gigabyte (GB) → bit (b)gigabyte (GB) → nibblegigabyte (GB) → kilobyte (KB)gigabyte (GB) → terabyte (TB)gigabyte (GB) → petabyte (PB)gigabyte (GB) → exabyte (EB)gigabyte (GB) → kibibyte (KiB)gigabyte (GB) → mebibyte (MiB)gigabyte (GB) → gibibyte (GiB)gigabyte (GB) → tebibyte (TiB)gigabyte (GB) → pebibyte (PiB)gigabyte (GB) → kilobit (kbit)gigabyte (GB) → megabit (Mbit)gigabyte (GB) → gigabit (Gbit)gigabyte (GB) → terabit (Tbit)gigabyte (GB) → petabit (Pbit)gigabyte (GB) → exabit (Ebit)gigabyte (GB) → kibibit (Kibit)gigabyte (GB) → mebibit (Mibit)gigabyte (GB) → gibibit (Gibit)gigabyte (GB) → tebibit (Tibit)gigabyte (GB) → pebibit (Pibit)gigabyte (GB) → megabit per second (Mbps)gigabyte (GB) → megabyte per second (MB/s)gigabyte (GB) → gigabit per second (Gbps)gigabyte (GB) → gigabyte per second (GB/s)gigabyte (GB) → kilobit per second (kb/s)gigabyte (GB) → kilobyte per second (KB/s)gigabyte (GB) → bit per second (b/s)gigabyte (GB) → byte per second (B/s)gigabyte (GB) → character (char)gigabyte (GB) → wordgigabyte (GB) → mapm-wordgigabyte (GB) → quadruple-word (quad-word)gigabyte (GB) → blockgigabyte (GB) → floppy 3.5" dd (3.5" DD)gigabyte (GB) → floppy 3.5" hd (3.5" HD)gigabyte (GB) → floppy 3.5" ed (3.5" ED)gigabyte (GB) → floppy 5.25" dd (5.25" DD)gigabyte (GB) → floppy 5.25" hd (5.25" HD)gigabyte (GB) → zip 100gigabyte (GB) → zip 250gigabyte (GB) → jaz 1gbgigabyte (GB) → jaz 2gbgigabyte (GB) → cd (74 min)gigabyte (GB) → cd (80 min)gigabyte (GB) → dvd (single layer) (DVD SL)gigabyte (GB) → dvd (dual layer) (DVD DL)