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Another way of converting from binary to decimal, often quicker for a person familiar with hexadecimal, is to do so indirectly—first converting ( in binary) into ( in hexadecimal) dan then converting ( in hexadecimal) into ( in decimal).

For very large numbers, these simple methods are inefficient because they perform a large nombor of multiplications or divisions where one operand is very large. A simple divide-dan-conquer algorithm is more effective asymptotically: given a binary nombor, it is divided by 10k, where k is chosen so that the quotient roughly equals the remainder; then each of these pieces is converted to decimal dan the two are concatenated. Given a decimal nombor, it can be split into two pieces of about the same size, each of which is converted to binary, whereupon the first converted piece is multiplied by 10k dan added to the second converted piece, where k is the nombor of decimal digits in the second, least-significant piece before conversion.