GB to MB
One gigabyte is 1,000 megabytes. This GB to MB page has the formula, a conversion table, three worked examples and answers to common questions.
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The GB to MB formula
Going from gigabytes to megabytes means scaling the number by 1,000. A quantity of 1 GB therefore shows up as 1,000 MB in the widget above.
Reading the formula backwards gives GB = MB ÷ 1,000. Dividing by 1,000 undoes the multiplication, and 1 MB equals 0.001 GB.
Gigabytes to megabytes reference table
A set of 12 GB amounts is converted to MB below, using the same function as the converter at the top of the page.
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 0.02 | 20 |
| 0.04 | 40 |
| 0.1 | 100 |
| 0.2 | 200 |
| 0.75 | 750 |
| 1 | 1,000 |
| 1.5 | 1,500 |
| 3 | 3,000 |
| 8 | 8,000 |
| 15 | 15,000 |
| 40 | 40,000 |
| 120 | 120,000 |
Every row comes from the same function as the widget and keeps its rounding, so a figure copied from this table matches what the converter returns for that input.
Examples: turning gigabytes into megabytes
With 0.035 GB, the multiplication by 1,000 produces 35 MB once rounded the way the widget rounds.
Try 0.24 GB as well. Multiplying by 1,000 gives 240 MB, which the reverse ratio 0.001 maps back to 0.24 GB.
Example 3. Starting from the other unit, 15,000 MB is 15 GB, since 1 MB = 0.001 GB.
Going from megabytes to gigabytes
A dedicated page covers the opposite direction: MB to GB. In that case 1 MB = 0.001 GB.
Units outside this pair can be selected in the main Data Storage Converter, which uses the same unit table.
More data storage converter pairs
Frequently asked questions
How many megabytes are in one gigabyte?
One gigabyte equals 1,000 megabytes. The relationship is linear, so 10 GB is 10,000 MB and 100 GB is 100,000 MB.
One megabyte equals how many gigabytes?
Each megabyte corresponds to 0.001 gigabytes; scaled up by 10, that is 0.01 GB.
What does 0.095 GB come to in MB?
Using 1,000 as the multiplier, 0.095 gigabytes equals 95 megabytes.
What precision does the GB to MB result use?
Yes, the displayed MB value is trimmed. The converter prints at most 10 significant digits at or above 1, at most 8 below 1, and at most 6 decimals from 1,000 up, using exponent notation for extreme sizes. Two samples from this pair: 0.123456789 GB becomes 123.456789 MB, and 1,234.5678 GB becomes 1,234,567.8 MB.
How does the widget get from gigabytes to megabytes?
Every unit in this converter stores a factor relative to one shared reference unit. The widget multiplies the input by the factor of gigabytes, then divides by the factor of megabytes; for this pair that nets out to 1,000.
Can this converter go from MB to GB too?
Yes. The page titled "MB to GB" covers it, or you can press the swap button in the widget above. The arithmetic is MB × 0.001, so 25 MB is 0.025 GB.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →