Megabyte to Kilobyte Converter
One Megabyte equals 1024 Kilobyte (1 MB = 1024 KB). Multiply a Megabyte value by 1024 to get the equivalent in Kilobyte. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
KB = MB × 1024
Multiply the Megabyte value by 1024 to get the equivalent value in Kilobyte.
Example Conversions
1 Megabyte (MB)
1024 Kilobyte (KB)
5 Megabyte (MB)
5120 Kilobyte (KB)
10 Megabyte (MB)
10240 Kilobyte (KB)
25 Megabyte (MB)
25600 Kilobyte (KB)
100 Megabyte (MB)
102400 Kilobyte (KB)
Conversion Table
| Megabyte (MB) | Kilobyte (KB) |
|---|---|
| 0.1 | 102.4 |
| 0.5 | 512 |
| 1 | 1024 |
| 2 | 2048 |
| 5 | 5120 |
| 10 | 10240 |
| 25 | 25600 |
| 50 | 51200 |
| 100 | 102400 |
| 250 | 256000 |
| 500 | 512000 |
| 1000 | 1024000 |
How to Convert Manually
Use these steps to convert Megabyte values to Kilobyte without the calculator.
- Write down the value in Megabyte (MB) that you want to convert.
- Multiply that value by 1024.
- For example, 10 Megabyte × 1024 = 10240 Kilobyte.
- Label the result as Kilobyte (KB).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Megabyte and one Kilobyte.
About Megabyte and Kilobyte
The megabyte here is 1,024 kilobytes, about a million bytes. Photos, songs, and app downloads are typically measured in megabytes. The kilobyte here is 1,024 bytes (the binary convention operating systems use, formally 'kibibyte'). Small documents, icons, and emails are kilobyte-scale. One Megabyte equals 1024 Kilobyte (1 MB = 1024 KB). Megabyte to Kilobyte conversion comes up most often in photo and music file sizes and in app download sizes, typically when figures need restating for text documents and emails.
Precision and Rounding: This converter uses the binary convention (1 KB = 1,024 bytes), which matches how operating systems report file and memory sizes. Storage manufacturers label drives with decimal units (1 GB = 1,000,000,000 bytes), which is why a '1 TB' drive shows roughly 931 GB in your OS — check which convention your source uses.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Megabyte equals 15360 Kilobyte.
15 MB × 1024 = 15360 KB
FAQ
How do I convert Megabyte to Kilobyte?
Multiply the Megabyte value by 1024 to get the equivalent value in Kilobyte.
What is the formula for Megabyte to Kilobyte?
The formula is KB = MB × 1024.
How many Kilobyte are in 1 Megabyte?
1 Megabyte equals 1024 Kilobyte.
Can I convert Kilobyte back to Megabyte?
Yes. 1 Kilobyte equals 0.0009765625 Megabyte, and the related converter can reverse the calculation.
What are common names for Megabyte and Kilobyte?
Megabyte is shown as MB and may also be searched as megabytes, mb. Kilobyte is shown as KB and may also be searched as kilobytes, kb.
Was this page helpful?
Let us know if this converter met your needs.