All unit families

2 converters · 18 units

Data & Storage Units

Put a figure in the left-hand box and read the answer on the right. Nothing is submitted anywhere — the maths runs where you are sitting.

Data Storage

10 units

0.125

1 bit = 0.125 B

Bandwidth

8 units

0.001

1 bit/s = 0.001 Kbit/s

Two ways to count a byte

Storage is advertised in decimal and reported in binary, and the gap widens as the numbers grow: a drive sold as one terabyte is a thousand billion bytes, while the operating system counts in powers of two and shows noticeably less. Both prefix systems sit side by side here, so the difference stops being a mystery.

Bandwidth carries its own trap. Connections are sold in bits per second and downloads are displayed in bytes per second — a factor of eight. Convert once and the speed test and the progress bar finally tell the same story.