4 log 16Free Logarithms Calculator - Simplify logarithmic expressions using algebraic rules step-by-steplog2 16 = 4, since 24 = 2 × 2 × 2 × 2 = 16. · Logarithms can also be negative: log 2 1 2 = − 1 {textstyle log _{2}!{frac {1}{2}}=