Gigabyte to Megabyte Converter
Convert Gigabyte (GB) to Megabyte (MB). Results update as you type, with a conversion table and the formula below.
1 GB =
1,024 MB
GB to MB conversion table
| GB | MB |
|---|---|
| 1 | 1,024 |
| 2 | 2,048 |
| 3 | 3,072 |
| 4 | 4,096 |
| 5 | 5,120 |
| 6 | 6,144 |
| 7 | 7,168 |
| 8 | 8,192 |
| 9 | 9,216 |
| 10 | 10,240 |
| 15 | 15,360 |
| GB | MB |
|---|---|
| 20 | 20,480 |
| 25 | 25,600 |
| 30 | 30,720 |
| 40 | 40,960 |
| 50 | 51,200 |
| 60 | 61,440 |
| 70 | 71,680 |
| 80 | 81,920 |
| 90 | 92,160 |
| 100 | 102,400 |
How to use
- Type the GB value to convert.
- The result appears instantly in MB; the swap button reverses direction.
- For common values, check the conversion table below.
Frequently asked questions
How many MB is 1 GB?+
1 GB = 1,024 MB. The table below lists the values you'll reach for most often.
How accurate are the results?+
The math uses internationally standardized definitions; only the display is rounded to significant digits. Accurate enough for school, work and daily life.
How do I convert MB back to GB?+
Hit the swap arrows in the middle of the converter above — the direction flips and your value is kept.
Is it really free?+
Yes. No sign-up, no install, no usage limits. The site is ad-supported.
Unit guide
The formula
1 GB equals 1,024 MB — multiply a GB value by 1,024 to get MB. Example: 5 GB × 1,024 = 5,120 MB.
Going the other way, 1 MB = 0.000977 GB — multiply by 0.000977, or hit the swap button on the converter above.
When is this conversion needed?
Useful for comparing storage sizes, data-plan math and estimating file transfer times.