File Size Converter
Convert between different units of digital storage like MB, GB, and TB.
Calculation Result
1 Megabytes converted in Binary mode.
Frequently Asked Questions
What is the difference between Binary and Decimal units?
Binary units (used by operating systems like Windows) use a base of 1024 (2^10), while Decimal units (often used by storage manufacturers) use a base of 1000 (10^3). This is why a '1TB' drive often shows as ~931GB in Windows.
What are KiB, MiB, and GiB?
These are 'IEC' units specifically designed to refer to binary multiples (1024). KB, MB, and GB are technically SI units (1000), though they are often used interchangeably with binary units in software.
How many bits are in a byte?
There are exactly 8 bits in 1 byte.
How to Use the File Size Converter
To convert file sizes, enter your numeric value in the 'Value' field, then select your starting unit in the 'From Unit' dropdown (e.g., Megabytes). Select the target unit in the 'To Unit' dropdown (e.g., Kilobytes). Choose between 'Binary (Base 1024)' mode for how operating systems measure sizes, or 'Decimal (Base 1000)' for how storage manufacturers advertise space. The converted result appears instantly. Click 'Copy Result' to copy it to your clipboard.
Why Use an Online File Size Converter?
Our File Size Converter is an essential technical utility for developers, IT professionals, and power users who frequently work with storage, bandwidth, and data values. The ability to switch between Binary and Decimal modes is a critical feature that most converters lack, yet it explains the common discrepancy between a drive's advertised size and what your OS reports. The elite, segmented-control interface makes this distinction intuitive and clear. It's completely free, works instantly in your browser, and always produces accurate results.