MB to KB
One MB equals 1000 KB. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| MB | KB |
|---|---|
| 1 MB | 1000 KB |
| 2 MB | 2000 KB |
| 3 MB | 3000 KB |
| 5 MB | 5000 KB |
| 10 MB | 10000 KB |
| 15 MB | 15000 KB |
| 20 MB | 20000 KB |
| 25 MB | 25000 KB |
| 50 MB | 50000 KB |
| 100 MB | 100000 KB |
| 500 MB | 500000 KB |
| 1000 MB | 1000000 KB |
How to use
- Enter the number of MB in the field.
- The result in KB updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: KB = MB × 1000. Going back the other way, one KB is 0.001 MB.
Decimal and binary units are not the same
Storage is sold in decimal units — a kilobyte is 1000 bytes — while operating systems often count in binary, where a kibibyte is 1024. That is the whole reason a “500 GB” drive shows up as roughly 465 GiB in the system.
KB = MB × 1000
Frequently asked questions
How many KB are in one MB?
One MB is 1000 KB.
How do I convert MB to KB?
Multiply by the factor: KB = MB × 1000.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert KB back to MB?
One KB is 0.001 MB — or open the reverse page linked below.