MB to KB
Convert megabytes (MB) to kilobytes (KB) instantly — live conversion and a full reference table, 100% in your browser.
Input
Result
Reference table (1-100 MB)
| MB | KB | MB | KB |
|---|
What is a megabyte?
A megabyte (symbol: MB) is a unit of digital information storage equal to 1024 kilobytes, or approximately 1 million bytes (1,048,576 bytes). It is one of the most commonly used units for measuring file sizes, as it conveniently represents the size of a typical digital photo, an MP3 audio file, or a short document. Most operating systems display file sizes in megabytes when files are between 1 MB and 1024 MB.
The megabyte is also used to measure RAM capacity, app sizes, and download sizes. Understanding megabytes is essential for managing digital storage effectively.
What is a kilobyte?
A kilobyte (symbol: KB) is a unit of digital information storage equal to 1024 bytes in the binary system. The prefix kilo means one thousand in the metric system, but in computing it refers to 1024 (2^10) because computers operate in binary. One kilobyte can store approximately 1000 characters of text.
Kilobytes are mainly used for small text files, configuration files, icons, and low-resolution images. When file sizes are below 1 MB, they are typically expressed in KB for precision.
MB vs KB
Megabytes and kilobytes both measure digital information, but they differ in scale by a factor of 1024. The table below compares the two units:
| Feature | Megabyte (MB) | Kilobyte (KB) |
|---|---|---|
| Size | 1 MB = 1024 KB | 1 KB = 1024 bytes |
| Equals | 1,048,576 bytes | 1024 bytes |
| Best for | Medium files — photos, MP3, docs | Small files — text, config, icons |
Use megabytes for files 1 MB or larger, and kilobytes for anything smaller. Converting MB to KB is useful when you need a more granular view of file sizes.
When to convert MB to KB
Converting megabytes to kilobytes is useful when you need more precise file size information, especially for files between 0.01 MB and 1 MB. Common scenarios include debugging application memory usage, checking if a file meets a size requirement specified in KB, and comparing file sizes when some are listed in MB and others in KB.
Developers and system administrators frequently convert MB to KB when analyzing log files, configuring cache sizes, or setting up bandwidth limits that are specified in kilobytes.
How to convert MB to KB
To convert megabytes to kilobytes, multiply by 1024. For example, 2 MB x 1024 = 2048 KB, and 0.5 MB x 1024 = 512 KB. This binary conversion factor is standard across most operating systems.
This tool performs the calculation instantly: enter an MB value and get the KB equivalent immediately, along with a reference table covering 1-100 MB. All processing happens locally in your browser.
How do you convert MB to KB?
Multiply the megabyte value by 1024: KB = MB x 1024. For example, 2 MB = 2 x 1024 = 2048 KB.
Is 1 MB equal to 1000 KB or 1024 KB?
In computing, 1 MB equals 1024 KB (binary). Some storage manufacturers use 1000 KB (decimal), but most operating systems use 1024.
Why multiply by 1024 and not 1000?
Computers use binary, and 1024 is 2^10. This is the standard used by operating systems for MB-to-KB conversion.
Are my inputs uploaded to a server?
No. All calculations run locally in your browser. Nothing is uploaded.