💾 File Size Calculator
Convert between file size units (bytes, KB, MB, GB, TB, PB) and compare storage sizes. Free online file size converter tool.
Last updated: 2025-10-21
Show Unit Comparisonℹ️
How to Use
- • Enter the file size value you want to convert
- • Select the source unit (e.g., MB)
- • Select the target unit (e.g., KB)
- • View the conversion results and comparison
Frequently Asked Questions
What is a byte and how does it relate to other units?
A byte is the smallest unit of digital information, consisting of 8 bits. It is the fundamental building block for all other file size units. 1 KB = 1,024 bytes, 1 MB = 1,048,576 bytes, 1 GB = 1,073,741,824 bytes, and so on. Each unit is 1,024 times larger than the previous one.
Which is larger: KB or MB?
MB (Megabyte) is larger than KB (Kilobyte). 1 MB equals 1,024 KB. This means that 1 MB is 1,024 times larger than 1 KB. For example, a 5 MB file is equivalent to 5,120 KB.
How many bytes are in 1 GB?
1 GB (Gigabyte) contains 1,073,741,824 bytes. This is calculated as 1,024 × 1,024 × 1,024 bytes, following the binary system used in computing.
What is the difference between KB and KiB?
KB (Kilobyte) uses decimal system (1,000 bytes) while KiB (Kibibyte) uses binary system (1,024 bytes). Most file systems and operating systems use the binary system, so KB typically means 1,024 bytes in computing contexts.
How do I convert TB to GB?
To convert TB to GB, multiply by 1,024. For example, 2 TB = 2,048 GB. This is because 1 TB = 1,024 GB in the binary system used by computers.
What file size units are commonly used?
Common file size units include: Bytes (smallest, 8 bits), KB (Kilobytes, 1,024 bytes), MB (Megabytes, 1,048,576 bytes), GB (Gigabytes, 1,073,741,824 bytes), TB (Terabytes, 1,099,511,627,776 bytes), and PB (Petabytes, 1,125,899,906,842,624 bytes). Each unit is 1,024 times larger than the previous one in the binary system.
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