As humans, we primarily use the base 10 number system (digits from 0 - 9). However, computers use the base 2 system, binary. Normal binary is unsigned, meaning only positive numbers can be represented. To represent signed numbers (both negative and positive numbers), we use an interesting system, the most popular being the focus of this calculator: Two's Complement. Using Two's Complement, you can represent numbers for any bit amount (most commonly anywhere from 1 to 64 bits). The range for Two's Complement bit amount can be modeled using the following equation: . For example, the range for an 8 bit binary number would be: This calculator currently allows you to enter binary strings from 1 to 64 bits, but more functionality will be added in future updates!