Free · runs in your browser
Convert file size between KB and MB quickly
Useful for understanding limits such as 200 KB, 2 MB, and similar upload requirements.
Privacy first
Core processing runs inside your browser on your device wherever possible.
Core processing runs inside your browser on your device wherever possible.
Why use File Size Converter?
- B, KB, MB, and GB
- Instant calculation
- No data storage
How to use it
- Enter the value.
- Choose the original unit.
- Read all converted values.
Frequently asked questions
Does the tool use 1000 or 1024?
It uses decimal units: 1 KB = 1,000 bytes and 1 MB = 1,000,000 bytes, which is generally the best match for stated upload limits.
Why might a platform show a slightly different number?
Some platforms use a 1000-based system differently or round values in another way.
Related tools
Difference Between Two Dates
Calculate the difference between two dates in days, weeks, and a clear calendar interval.
Age Calculator
Calculate age from a birth date to today in years, months, and days.
Percentage Calculator
Calculate what percentage one number is of another, a percentage of a number, or the percentage change between two values.