bcal (Byte CALculator) is a command-line utility for storage conversions
and calculations. Storage, hardware and firmware developers work
with numerical calculations regularly e.g., storage unit conversions,
address calculations etc. If you are one and can't calculate the hex address
offset for (512 - 16) MiB immediately, or the value when the 43rd bit of
a 64-bit address is set, bcal is for you