Kilobytes to Megabytes
One kilobyte equals 0.001 megabytes.
Megabytes = kilobytes ÷ 1000
Digital Storage Conversion
Common File Sizes
Digital Storage Reference Guide
Binary vs Decimal Systems
Binary (1024-based): Used by operating systems
1 KiB = 1,024 bytes
1 MiB = 1,024 KiB = 1,048,576 bytes
1 GiB = 1,024 MiB = 1,073,741,824 bytes
Decimal (1000-based): Used by storage manufacturers
1 KB = 1,000 bytes
1 MB = 1,000 KB = 1,000,000 bytes
1 GB = 1,000 MB = 1,000,000,000 bytes
Storage Device Capacities
Floppy Disk: 1.44 MB
CD: 700 MB
DVD: 4.7 GB (single layer)
Blu-ray: 25 GB (single layer)
USB Flash: 8 GB - 1 TB
SSD: 120 GB - 8 TB
HDD: 500 GB - 20 TB
Enterprise: Up to 100 TB+
Data Transfer & Internet
Email attachment limit: ~25 MB
Streaming (HD): ~3 GB/hour
Streaming (4K): ~7 GB/hour
Web page: ~2 MB average
Mobile app: 10-200 MB
PC game: 20-150 GB
Important Notes
• 1 byte = 8 bits (fundamental relationship)
• Storage manufacturers use decimal, OS shows binary (explains "missing" space)
• Network speeds typically measured in bits per second (bps)
• File compression can significantly reduce storage requirements
Kilobytes to Megabytes Conversion Table
| KB | MB |
|---|---|
| 1 | 0.001 |
| 10 | 0.01 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
| 2000 | 2 |
| 5000 | 5 |
| 10000 | 10 |
| 25000 | 25 |
| 50000 | 50 |
| 100000 | 100 |
About This Conversion
Kilobytes to megabytes divides by 1,000 in decimal units. It is the everyday conversion for web assets, documents and email attachments, where sizes are reported in kilobytes but budgets are set in megabytes.
Page-weight budgets are the usual reason to do it. A 150 KB image is 0.15 MB, so ten of them put 1.5 MB on the page before any code loads. Since a typical page budget is around 1 to 2 MB, that arithmetic decides whether an asset ships.
Frequently Asked Questions
How many KB are in an MB?
1 MB is 1,000 KB in decimal units, or 1,024 KiB in binary units.
How many MB is 500 KB?
500 KB is 0.5 MB.
How many MB is 5000 KB?
5,000 KB is 5 MB.
Is a kilobyte 1000 or 1024 bytes?
A kilobyte (KB) is 1,000 bytes. A kibibyte (KiB) is 1,024 bytes.
Worth Knowing
MB vs MiB
A megabyte is 1,000,000 bytes while a mebibyte is 1,048,576 bytes, and the gap grows with each prefix until a 1 TB drive reports as 931 GB.
Related Conversions
Converting the other way? Megabytes to Kilobytes
Need a different unit? Open the full digital storage converter