Developer
File Size Converter
Convert file sizes between bytes, kilobytes, megabytes, gigabytes, and terabytes instantly.
Converted Size
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How It Works
Each unit is 1,024 times larger than the previous. 1 KB = 1,024 B. 1 MB = 1,024 KB. 1 GB = 1,024 MB. 1 TB = 1,024 GB. Multiply or divide by 1,024 for each step.
Example
1,000 MB Γ· 1,024 = 0.9765 GB. 500 MB Γ 1,024 = 512,000 KB.
Frequently Asked Questions
Why is 1 KB = 1,024 and not 1,000 bytes?
Computers use binary (base-2). 2^10 = 1,024 is the nearest power of 2 to 1,000. Hard drive manufacturers use 1,000 (decimal), causing the discrepancy you see in Windows file explorer.
What is a megabyte vs megabit?
A megabyte (MB) = 8 megabits (Mb). Internet speeds are measured in megabits per second (Mbps). File sizes are in megabytes. A 100 Mbps connection downloads at ~12.5 MB/s.
How large is a gigabyte in practical terms?
1 GB holds roughly 1,000 photos (1 MB each), 250 songs (4 MB each), or about 1 hour of HD video.