What is the base 10 number for the binary number 1000?

The binary number 1000 is equal to the base 10 number 8. This is calculated by taking the binary digits from right to left, where each digit represents a power of 2: (1 \times 2^3 + 0 \times 2^2 + 0 \times 2^1 + 0 \times 2^0 = 8 + 0 + 0 + 0 = 8).