What is the difference between MB and MiB?

MB (megabyte) is a decimal unit equal to 1,000,000 bytes (10^6), while MiB (mebibyte) is a binary unit equal to 1,048,576 bytes (2^20). Storage manufacturers typically use decimal units, while operating systems often display sizes in binary units. This is why a 500 GB hard drive may show as only 465 GB in your operating system.

Why does my hard drive show less space than advertised?

Hard drive manufacturers use decimal units (1 GB = 1 billion bytes), while operating systems use binary units (1 GiB = 1.074 billion bytes). A 500 GB drive is actually about 465 GiB. This tool helps you understand and convert between these two systems.

How many bytes are in a kilobyte?

In decimal (SI) units, 1 kilobyte (KB) equals 1,000 bytes. In binary (IEC) units, 1 kibibyte (KiB) equals 1,024 bytes. The tool clearly shows both values to avoid confusion. The 1,024-byte definition is more commonly used in computing contexts.

Can I calculate upload time from file size?

While this tool focuses on unit conversion, you can use the converted file size with your internet speed to estimate upload times. For example, a 100 MB file on a 10 Mbps connection would take about 80 seconds to upload (100 MB × 8 bits/byte ÷ 10 Mbps).

What is the largest unit this tool supports?

The tool supports units up to petabytes (PB) and pebibytes (PiB). For reference, 1 PB equals approximately 1,000,000 GB. This covers virtually all practical data size needs, from individual files to enterprise-scale storage systems.

Is this tool accurate for professional use?

Yes, the tool uses exact mathematical conversions based on international standards (IEC 80000-13 for binary prefixes and SI for decimal prefixes). The results are precise and suitable for professional use in storage planning, network engineering, and data management.

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File Size Converter

A file size converter is an online tool that instantly converts data size values between units like bytes, KB, MB, GB, TB, and PB. It supports both decimal and binary units, helping you understand the difference between MB and MiB.

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What is File Size Converter?

A file size converter is an online utility that converts data storage values between different units of measurement, supporting both decimal (SI) and binary (IEC) prefixes from bits to petabytes.

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These tools work great alongside File Size Converter:

Percentage Calculator Number Base Converter

Start Using File Size Converter Today

Converting between file size units doesn't have to involve mental math or unreliable calculators. Our file size converter handles both SI and binary standards with perfect precision, automatically selecting the most readable unit for your needs. Whether you're a developer, IT professional, or casual user, this free tool delivers instant, accurate conversions every time.

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