In 1 kilobytes there are 0.001 megabytes. Meanwhile in 1 megabytes there are 1,000 kilobytes. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Megabytes to Kilobytes calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert kilobytes (KB) to megabytes (MB), you divide by a fixed number. The right number depends on the system used.
Binary conversion (most common in computers):
1 MB = 1,024 KB
MB = KB ÷ 1,024
Decimal conversion (often used for storage marketing):
1 MB = 1,000 KB
MB = KB ÷ 1,000
Quick examples (KB to MB):
Tip: If you want an accurate KB to MB conversion, check whether your file size uses 1,024 or 1,000.
It depends on which system you use.
Most storage makers use decimal. Many computer memory and OS tools use binary.
MB usually means a decimal unit. MiB is the binary unit.
They look close, but the gap grows with bigger files.
No. 1,024 comes from the binary system, but many cases use 1,000.
Use 1,000 when talking about drive sizes and many download limits. Use 1,024 when a tool reports sizes in base-2 but still labels them as KB and MB.
Pick the right base, then divide.
Example (decimal): 25,000 KB ÷ 1,000 = 25 MB
Example (binary): 25,000 KiB ÷ 1,024 = 24.41 MiB (rounded)
Using decimal units:
100,000 KB ÷ 1,000 = 100 MB
Using binary units (if those KB are really KiB):
100,000 ÷ 1,024 = 97.66 MiB (rounded)
This is a common place where labels cause confusion.
Many drive makers list sizes in decimal (1,000) units. Some software reports sizes using binary (1,024) units, even if it still shows KB and MB.
That’s why a “1 TB” drive can show less than 1,000 GB in some tools.
Most online file sizes, upload limits, and download caps use decimal MB.
If you’re checking memory, system reports, or low-level tools, you may see binary values. When in doubt, look for MiB or GiB labels, or check the tool’s settings.
Yes. Case changes the meaning.
Also:
Mixing bits and bytes can make speeds and sizes seem off.
Convert bytes to KB first, then to MB, or go straight to MB.
Example (decimal): 5,000,000 bytes ÷ 1,000,000 = 5 MB
Here are quick decimal conversions (KB ÷ 1,000):
Binary results will be a bit smaller when you divide by 1,024.
Rounding helps when you need a clean number.
Try to stay consistent across a report or team.
The Calculate Box tool to convert kilobytes to megabytes uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a kilobytes value in the box and have it instantly converted to megabytes.