KB (Kilobyte) in the SI decimal standard equals 1,000 bytes. KiB (Kibibyte) in the IEC binary standard equals 1,024 bytes. Most operating systems (Windows, macOS, Linux) report file sizes using binary multiples while labeling them as KB/MB/GB. This tool's Binary (1024) mode matches OS behavior, while Decimal (1000) matches storage manufacturer labels and network speeds.
Hard drive manufacturers use decimal (1000-based) units: 1 GB = 1,000,000,000 bytes. Operating systems report size using binary (1024-based) units. So a "500 GB" hard drive contains 500,000,000,000 bytes, which Windows reports as ~465.66 GB (binary). This tool's two-standard toggle lets you verify both values instantly.
Binary (OS standard): divide MB by 1,024. Example: 2,048 MB ÷ 1,024 = 2 GB. Decimal (SI standard): divide MB by 1,000. Example: 2,000 MB ÷ 1,000 = 2 GB. You can enter any value above and switch between standards to see both results immediately.
A Petabyte is one of the largest commonly used storage units. Binary: 1 PB = 1,024 TB = 1,125,899,906,842,624 bytes. Decimal: 1 PB = 1,000 TB = 1,000,000,000,000,000 bytes. Petabytes are used by large cloud providers, data centers, and streaming platforms to describe total stored data.
Use Binary (1024) when working with OS-reported file sizes, RAM sizes, and programming contexts. Use Decimal (1000) when comparing storage device capacities, network transfer rates, or SI-compliant specifications. When in doubt, Binary matches what your file manager shows.
Binary (IEC): 1 MB = 1,048,576 bytes (1024²). Decimal (SI): 1 MB = 1,000,000 bytes (1000²). The difference is about 4.8%. For a 100 MB file: binary = 104,857,600 bytes vs. decimal = 100,000,000 bytes.
No. All conversions happen entirely inside your browser using JavaScript. No data is transmitted over the network at any point. The tool works completely offline once the page has loaded.
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