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File Size Calc — DevKit Tools
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File Size Calculator
File Size Calculator
Calculate and convert file sizes between bytes, KB, MB, GB, TB. Estimate storage needs.
Byte / KB / MB / GB / TB
Binary and decimal units
Reverse conversion
Quick reference
Tool
Value
Unit
B (Byte)
KB
MB
GB
TB
PB
💡 Binary: 1 KB = 1024 B · Decimal: 1 KB = 1000 B