Megabytes to Kilobytes Converter
One Megabyte equals 1000 Kilobytes (1 MB = 1000 KB). Multiply a Megabyte value by 1000 to get the equivalent in Kilobytes. Enter your value in the calculator above. The formula and examples below show how to calculate it by hand.
Formula
KB = MB × 1000
Multiply the Megabyte value by 1000 to get the equivalent value in Kilobytes.
Example Conversions
1 Megabyte (MB)
1000 Kilobyte (KB)
5 Megabyte (MB)
5000 Kilobyte (KB)
10 Megabyte (MB)
10000 Kilobyte (KB)
25 Megabyte (MB)
25000 Kilobyte (KB)
100 Megabyte (MB)
100000 Kilobyte (KB)
Conversion Table
| Megabyte (MB) | Kilobyte (KB) |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
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 1000.
- For example, 10 Megabytes × 1000 = 10000 Kilobytes.
- 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 is an SI decimal data unit equal to exactly 1,000 kilobytes, or 1,000,000 bytes. Photos, songs, and app downloads are commonly measured in megabytes. The kilobyte is an SI decimal data unit equal to exactly 1,000 bytes. Small documents, icons, and emails are commonly measured in kilobytes. One Megabyte equals 1000 Kilobytes (1 MB = 1000 KB). Megabyte is used in photo and music file sizes and in app download sizes. Kilobyte is used in text documents and emails.
Precision and Rounding:This converter keeps SI decimal prefixes (1 KB = 1,000 bytes) separate from IEC binary prefixes (1 KiB = 1,024 bytes). Match the symbol used by your source before converting because some operating-system interfaces display binary quantities with decimal labels.
See our guide to megabits vs. megabytes if you're unsure which one your download speed is quoted in.
Data units follow NIST guidance: decimal SI prefixes use powers of 1,000, while IEC binary prefixes use powers of 1,024 (reference).
Worked Example
15Megabytes equals15000Kilobytes.
15 MB × 1000 = 15000 KB
FAQ
How do I convert Megabyte to Kilobyte?
Multiply the Megabyte value by 1000 to get the equivalent value in Kilobytes.
What is the formula for Megabyte to Kilobyte?
The formula is KB = MB × 1000.
How many Kilobytes are in 1 Megabyte?
1 Megabyte equals 1000 Kilobytes.
Can I convert Kilobyte back to Megabyte?
Yes. 1 Kilobyte equals 0.001 Megabytes, 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, decimal megabyte. Kilobyte is shown as KB and may also be searched as kilobytes, kb, decimal kilobyte.
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