The terabyte (TB) equals 1,024 gigabytes or approximately 1.1 trillion bytes, used for large-scale storage like hard drives, cloud backups, and enterprise databases. Modern external hard drives commonly offer 1 to 8 TB of capacity, enough to hold hundreds of thousands of photos or thousands of hours of video. One terabyte represents a massive amount of data by everyday consumer standards.

The gigabit (Gbit) equals 1,000 megabits or one billion bits, used to describe high-speed network connections and data center interconnects. Modern fiber-optic internet plans often reach gigabit speeds, and enterprise networks rely on gigabit-level throughput for handling large volumes of traffic. One gigabit equals 125 megabytes, highlighting the practical difference between bits and bytes.