Change of Base Calculator log_b(x) using any base. x Original base New base log in new base 0 Step-by-step with your numbers: 1. Values used: 2. x = 1,000 3. Original base = 10 4. New base = 2 5. log in new base = 0 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! log_b(x) = log_k(x) ÷ log_k(b). FAQ Use? Convert any log base to another. Related calculators Logarithm Calculator Find the logarithm of a number in any base. Log Base 2 Calculator Find the base-2 logarithm of a number. Natural Log Calculator Find the natural logarithm (ln) of a number.