A bit is a single 0 or 1, and eight bits make one byte.
A bit is the smallest unit of information, a 0 or 1. Eight bits form one byte, which can represent 0-255 (eight binary digits).
1KB is conventionally 1,024 bytes (2¹⁰) and 1MB is 1,024KB. Storage makers sometimes use the decimal basis (1KB = 1,000B), so the binary basis is written as KiB and MiB.
Enter a value and this tool shows its bit length and byte count alongside each base.