File Size Converter
Convert file sizes between bytes, KB, MB, GB, TB, and PB with both SI and binary values.
The File Size Converter translates digital storage values between bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), and petabytes (PB). It displays both SI (base-1000) and binary (base-1024) results so you can see the value in whichever standard your context requires.
SI units use powers of 1000 and are the standard adopted by most storage manufacturers and the International System of Units. Binary units use powers of 1024 and are commonly used by operating systems and memory specifications. This distinction explains why a hard drive advertised as 500 GB often shows approximately 465 GiB in your operating system.
Whether you are estimating cloud storage costs, checking how many photos will fit on a memory card, comparing bandwidth quotas, or converting values for a technical document, this tool gives you instant and accurate results. Enter any numeric value, select the source unit, choose the target unit, and the converter does the rest.
All calculations are performed in your browser using JavaScript. No data is uploaded, no account is required, and the tool works offline once the page has loaded.
SI units use powers of 1000 and are the standard adopted by most storage manufacturers and the International System of Units. Binary units use powers of 1024 and are commonly used by operating systems and memory specifications. This distinction explains why a hard drive advertised as 500 GB often shows approximately 465 GiB in your operating system.
Whether you are estimating cloud storage costs, checking how many photos will fit on a memory card, comparing bandwidth quotas, or converting values for a technical document, this tool gives you instant and accurate results. Enter any numeric value, select the source unit, choose the target unit, and the converter does the rest.
All calculations are performed in your browser using JavaScript. No data is uploaded, no account is required, and the tool works offline once the page has loaded.
Converter
Results
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How to Use
- Enter the file size value.
- Select the source unit (e.g., MB).
- Select the target unit (e.g., GB) and view the converted result.
FAQ
What is the difference between SI and binary units?
SI units use powers of 1000 (1 KB = 1000 bytes). Binary units use powers of 1024 (1 KiB = 1024 bytes). This tool shows both values.
Why does my hard drive show less space than advertised?
Manufacturers use SI units (base 1000) while operating systems typically use binary units (base 1024). A 500 GB drive is about 465 GiB.
Is my data safe in the browser?
Yes. All calculations run locally in your browser using JavaScript. No data is sent to any server.
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