MB to KB Converter
Instantly convert between Megabytes (MB) and Kilobytes (KB) using the binary 1024 standard.
Quick presets
Quick Reference (1 MB = 1,024 KB)
| MB | KB |
|---|---|
| 0.1 MB | 102.4 KB |
| 0.5 MB | 512 KB |
| 1 MB | 1,024 KB |
| 5 MB | 5,120 KB |
| 10 MB | 10,240 KB |
| 100 MB | 102,400 KB |
Understanding file size units
In computing, 1 Megabyte (MB) equals 1,024 Kilobytes (KB) — this is the binary standard used by operating systems and file systems.
Note: Storage manufacturers sometimes use the decimal standard (1 MB = 1,000 KB), which is why a 1 GB drive may show slightly less space than expected. This tool uses the binary standard.
Knowing how to convert between these units is useful for checking image upload limits, email attachment sizes, and general file management.
Frequently Asked Questions
Why does 1 MB = 1,024 KB and not 1,000?▼
Binary systems use powers of 2. 1 KB = 2^10 = 1,024 bytes, and 1 MB = 2^20 = 1,048,576 bytes. Storage manufacturers use 1,000 for marketing purposes.
What is a gigabyte in KB?▼
1 GB = 1,024 MB = 1,048,576 KB. For rough estimates, 1 GB ≈ 1 million KB.