Calculator for orders of magnitude of numbers, expressed by decimal and binary prefixes, for Windows XP / Windows 7. Useful generally for computer users. Learn about the binary prefixes on this page.

You see everything in one window. The yellow entry field can be placed on any of the nine positions, and while you type the number all other exchanged values are appearing without delay. If a value overflows the 15 digits then that field is filled with equal marks.

The little arrowheads show the direction of rounding which results the displayed value. You can set forced rounding direction with buttons X and Z. (The letters are for hot keys.) By other buttons the decimal digits of the rounding can be set.