Data Size Converter

Bits, bytes, and binary

A bit is the smallest digital unit — a 0 or 1. Eight bits make one byte. Storage makers use decimal (1 KB = 1,000 bytes); operating systems use binary (1 KiB = 1,024 bytes) — explaining why a 1 TB drive appears as ~931 GB.

• 1 byte = 8 bits
• 1 KB = 1,024 bytes (2¹⁰)
• 1 MB = 1,048,576 bytes (2²⁰)
• 1 GB = 1,073,741,824 bytes (2³⁰)