The "Bits vs. Bytes" Confusion
The most common question regarding internet speed is: "If I pay for 1 Gigabit internet (1 Gbps), why does a 1 Gigabyte (1 GB) file take more than 1 second to download?"
The answer comes down to a sneaky marketing standard used by Internet Service Providers (ISPs) vs. Computer Operating Systems. They use different measurements:
Storage uses BYTES (B)
Files on your computer (like an 80 GB video game or a 5 MB photo) are measured in Bytes. Notice the capital "B".
Internet uses BITS (b)
Internet speed (like 300 Mbps) is measured in bits. Notice the lowercase "b". There are exactly 8 bits in 1 Byte.
The Magic Rule of 8
Because there are 8 bits in a Byte, your actual download speed in terms of computer files is 8 times slower than the number your internet provider advertises.
100 Mbps Internet ÷ 8 = 12.5 MB/s (Max Download Speed)
1 Gbps (1000 Mbps) ÷ 8 = 125 MB/s (Max Download Speed)
*Note: Real-world download speeds are usually 10-20% slower than this theoretical maximum due to network overhead, Wi-Fi interference, and server limits.