MB to KB conversion formula
1 megabyte = 1000 kilobyte
The megabyte (MB) is 10⁶ bytes in decimal convention, or 1,048,576 bytes in binary units (MiB).
The kilobyte (KB) is 1,000 bytes in decimal convention, or 1,024 bytes in binary units (KiB). A short plain-text email is about 2 KB.
MB to KB conversion table
| MB | KB |
|---|---|
| 1 MB | 1000 KB |
| 2 MB | 2000 KB |
| 3 MB | 3000 KB |
| 5 MB | 5000 KB |
| 10 MB | 10000 KB |
| 20 MB | 20000 KB |
| 25 MB | 25000 KB |
| 50 MB | 50000 KB |
| 100 MB | 100000 KB |
| 250 MB | 250000 KB |
| 500 MB | 500000 KB |
| 1000 MB | 1000000 KB |
How to convert MB to KB
- Write down the value in MB you want to convert.
- Multiply it by 1000 — or use the converter above, which does it instantly.
- Read your result in KB. Done.
Frequently asked questions
How many KB is 1 MB?
Using the official conversion factor, 1 megabyte = 1000 kilobyte. The converter above handles any value instantly.
What is the formula to convert megabyte to kilobyte?
1 megabyte = 1000 kilobyte. Multiply any value in MB by this factor to get KB.
Is this MB to KB converter free?
Yes — 100% free, unlimited, with no sign-up. CalculUnits is funded by non-intrusive ads, never by paywalls.