Logarithm Calculator / Page: 1
Natural Log of −5 (ln(−5)) Natural Log of −2 (ln(−2)) Natural Log of −1 (ln(−1)) Natural Log of 0 (ln 0) Natural Log of 0.01 (ln 0.01) Natural Log of 0.1 (ln 0.1) Natural Log of 0.2 (ln 0.2) Natural Log of 0.4 (ln 0.4) Natural Log of 0.5 (ln 0.5) Natural Log of 0.9 (ln 0.9) Natural Log of 1 (ln 1) Natural Log of 1.05 (ln 1.05) Natural Log of 1.5 (ln 1.5) Natural Log of 2 (ln 2) Natural Log of e (ln e) Natural Log of 3 (ln 3) Natural Log of 4 (ln 4) Natural Log of 5 (ln 5) Natural Log of 6 (ln 6) Natural Log of 7 (ln 7) Natural Log of 8 (ln 8) Natural Log of 9 (ln 9) Natural Log of 10 (ln 10) Natural Log of 14 (ln 14) Natural Log of 16 (ln 16) Natural Log of 18 (ln 18) Natural Log of 20 (ln 20) Natural Log of 21 (ln 21) Natural Log of 30 (ln 30) Natural Log of 40 (ln 40) Natural Log of 42 (ln 42) Natural Log of 50 (ln 50) Natural Log of 60 (ln 60) Natural Log of 100 (ln 100) Natural Log of 1000 (ln 1000) Natural Log of 1380 (ln 1380) Natural Log of 9297 (ln 9297) Natural Log of 10000 (ln 10000) Log of −2 (Base 10) Log of −1 (Base 10) Log of 0 (Base 10) Log of 0.01 (Base 10) Log of 0.05 (Base 10) Log of 0.1 (Base 10) Log of 0.3 (Base 10) Log of 0.8 (Base 10) Log of 0.9 (Base 10) Log of 1 (Base 10) Log of 1.6 (Base 10) Log of 2 (Base 10) Log of e (Base 10) Log of 3 (Base 10) Log of 4 (Base 10) Log of 5 (Base 10) Log of 6 (Base 10) Log of 7 (Base 10) Log of 8 (Base 10) Log of 9 (Base 10) Log of 10 (Base 10) Log of 15 (Base 10) Log of 16 (Base 10) Log of 25 (Base 10) Log of 26 (Base 10) Log of 27 (Base 10) Log of 60 (Base 10) Log of 75 (Base 10) Log of 80 (Base 10) Log of 81 (Base 10) Log of 100 (Base 10) Log of 200 (Base 10) Log of 512 (Base 10) Log of 1000 (Base 10) Log of 7000000 (Base 10) Log Base 2 of −1 (log₂(−1)) Log Base 2 of 0 (log₂ 0) Log Base 2 of 0.125 (log₂ 0.125) Log Base 2 of 1/6 (log₂(1/6)) Log Base 2 of 0.25 (log₂ 0.25) Log Base 2 of 1/3 (log₂(1/3)) Log Base 2 of 0.5 (log₂ 0.5) Log Base 2 of 1 (log₂ 1) Log Base 2 of 2 (log₂ 2) Log Base 2 of 3 (log₂ 3) Log Base 2 of 4 (log₂ 4) Log Base 2 of 5 (log₂ 5) Log Base 2 of 6 (log₂ 6) Log Base 2 of 7 (log₂ 7) Log Base 2 of 8 (log₂ 8) Log Base 2 of 9 (log₂ 9) Log Base 2 of 10 (log₂ 10) Log Base 2 of 11 (log₂ 11) Log Base 2 of 12 (log₂ 12) Log Base 2 of 15 (log₂ 15) Log Base 2 of 16 (log₂ 16) Log Base 2 of 27 (log₂ 27) Log Base 2 of 32 (log₂ 32) Log Base 2 of 64 (log₂ 64) Log Base 2 of 100 (log₂ 100) Log Base 2 of 128 (log₂ 128) Log Base 2 of 256 (log₂ 256) Log Base 2 of 1000 (log₂ 1000) Log Base 2 of 1024 (log₂ 1024) Log Base 2 of 32768 (log₂ 32768) Log Base 0.25 of 8 Log Base 0.5 of 4 Log Base 0.5 of 8 Log Base 0.5 of 16 Log Base 0.5 of 32 Log Base 3 of 1/9 (log₃(1/9)) Log Base 3 of 1 (log₃ 1) Log Base 3 of 2 (log₃ 2) Log Base 3 of 3 (log₃ 3) Log Base 3 of 4 (log₃ 4) Log Base 3 of 5 (log₃ 5) Log Base 3 of 6 (log₃ 6) Log Base 3 of 7 (log₃ 7) Log Base 3 of 8 (log₃ 8) Log Base 3 of 9 (log₃ 9) Log Base 3 of 27 (log₃ 27) Log Base 3 of 81 (log₃ 81) Log Base 4 of 0.0625 (log₄ 0.0625) Log Base 4 of 1 (log₄ 1) Log Base 4 of 2 (log₄ 2) Log Base 4 of 3 (log₄ 3) Log Base 4 of 4 (log₄ 4) Log Base 4 of 5 (log₄ 5) Log Base 4 of 6 (log₄ 6) Log Base 4 of 8 (log₄ 8) Log Base 4 of 16 (log₄ 16) Log Base 4 of 25 (log₄ 25) Log Base 4 of 64 (log₄ 64) Log Base 5 of 1 (log₅ 1) Log Base 5 of 3 (log₅ 3) Log Base 5 of 4 (log₅ 4) Log Base 5 of 5 (log₅ 5) Log Base 5 of 7 (log₅ 7) Log Base 5 of 9 (log₅ 9) Log Base 5 of 10 (log₅ 10) Log Base 5 of 25 (log₅ 25) Log Base 5 of 125 (log₅ 125) Log Base 5 of 625 (log₅ 625) Log Base 6 of 1 (log₆ 1) Log Base 6 of 7 (log₆ 7) Log Base 6 of 36 (log₆ 36) Log Base 7 of 1 (log₇ 1) Log Base 7 of 7 (log₇ 7) Log Base 7 of 8 (log₇ 8) Log Base 7 of 343 (log₇ 343) Log Base 8 of 1 (log₈ 1) Log Base 8 of 2 (log₈ 2) Log Base 8 of 4 (log₈ 4) Log Base 8 of 5 (log₈ 5) Log Base 9 of 1/81 (log₉(1/81)) Log Base 9 of 3 (log₉ 3) Log Base 9 of 27 (log₉ 27) Log Base 13 of 13 (log₁₃ 13) Log Base 16 of 1 (log₁₆ 1) Log Base 25 of 5 (log₂₅ 5) Log Base 81 of 27 (log₈₁ 27)