Megabytes to Gigabytes Converter
1 megabyte = 0.001 gigabytes.
Enter a value
Result
1 megabyte =
0.001 GB
1 MB × 0.001 = 0.001 GB
Decimal units count in 1,000s; binary units (KiB, MiB, GiB) count in 1,024s
The working
- 1. Convert 1 MB to bytes: 1 × 1,000,000 = 1,000,000.
- 2. Convert to GB: 1,000,000 ÷ 1,000,000,000 = 0.001.
1 MB in every unit
Why a drive shows less than advertised
- A 500 GB drive shows as
- ≈ 465.7 GiB
- MP3 song
- ≈ 4 MB
- Phone photo
- ≈ 3 MB
- HD film
- ≈ 4 GB
Conversion table
Megabytes to Gigabytes
| Megabytes | Gigabytes |
|---|---|
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 750 | 0.75 |
| 1,000 | 1 |
| 1,500 | 1.5 |
| 2,000 | 2 |
| 5,000 | 5 |
| 10,000 | 10 |
Gigabytes to Megabytes
| Gigabytes | Megabytes |
|---|---|
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 750 | 750,000 |
| 1,000 | 1,000,000 |
| 1,500 | 1,500,000 |
| 2,000 | 2,000,000 |
| 5,000 | 5,000,000 |
| 10,000 | 10,000,000 |
Formula and worked example
gigabytes = megabytes × 0.001.
Convert 500 megabytes to gigabytes: 500 × 0.001 = 0.5 GB.
When you need this
Phone data plans, app sizes and photo libraries mix megabytes and gigabytes. Here 1 GB is 1,000 MB, the decimal convention used by storage makers and mobile networks.
Questions people ask
How many gigabytes are in a megabyte?
One megabyte is 0.001 gigabytes.
How do I convert megabytes to gigabytes?
Multiply the number of megabytes by 0.001, or divide by 1,000.
What is 1,000 MB in GB?
1,000 megabytes is 1 gigabyte.
How do I convert gigabytes back to megabytes?
Multiply by 1,000: one gigabyte is 1,000 megabytes.
Related conversions
How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
Spotted a mistake? Tell us and we'll check it. How we check our calculators