Definition of kilobyte
: 1024 bytes
Did You Know?
Knowing the root kilo-, you might think a kilobyte would be exactly 1,000 bytes. But actually a kilobyte represents the power of 2 that comes closest to 1,000: that is, 210 (2 to the 10th power), or 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2, or 1,024. Why 2? Because the capacity of memory chips is always based on powers of 2. Locations in electronic memory circuits are identified by binary numbers (numbers that use only the digits 0 and 1), so the number of addressable locations becomes a power of 2.
Origin and Etymology of kilobyte
from the fact that 1024 (210) is the power of 2 closest to 1000
First Known Use: 1970
KILOBYTE Defined for English Language Learners
Definition of kilobyte for English Language Learners
: a unit of computer information equal to 1,024 bytes
KILOBYTE Defined for Kids
Definition of kilobyte for Students
: a unit of computer information storage equal to 1024 bytes
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