Common Logarithm (Base 10) Table: 1 to 100
log₁₀(100) = 2 because 10² = 100.
Values are rounded to six decimal places. Real logarithms require a positive input; log(0) is undefined.
| n | Logarithm |
|---|---|
| 1 | 0.000000 |
| 2 | 0.301030 |
| 3 | 0.477121 |
| 4 | 0.602060 |
| 5 | 0.698970 |
| 6 | 0.778151 |
| 7 | 0.845098 |
| 8 | 0.903090 |
| 9 | 0.954243 |
| 10 | 1.000000 |
| 11 | 1.041393 |
| 12 | 1.079181 |
| 13 | 1.113943 |
| 14 | 1.146128 |
| 15 | 1.176091 |
| 16 | 1.204120 |
| 17 | 1.230449 |
| 18 | 1.255273 |
| 19 | 1.278754 |
| 20 | 1.301030 |
| 21 | 1.322219 |
| 22 | 1.342423 |
| 23 | 1.361728 |
| 24 | 1.380211 |
| 25 | 1.397940 |
| 26 | 1.414973 |
| 27 | 1.431364 |
| 28 | 1.447158 |
| 29 | 1.462398 |
| 30 | 1.477121 |
| 31 | 1.491362 |
| 32 | 1.505150 |
| 33 | 1.518514 |
| 34 | 1.531479 |
| 35 | 1.544068 |
| 36 | 1.556303 |
| 37 | 1.568202 |
| 38 | 1.579784 |
| 39 | 1.591065 |
| 40 | 1.602060 |
| 41 | 1.612784 |
| 42 | 1.623249 |
| 43 | 1.633468 |
| 44 | 1.643453 |
| 45 | 1.653213 |
| 46 | 1.662758 |
| 47 | 1.672098 |
| 48 | 1.681241 |
| 49 | 1.690196 |
| 50 | 1.698970 |
| 51 | 1.707570 |
| 52 | 1.716003 |
| 53 | 1.724276 |
| 54 | 1.732394 |
| 55 | 1.740363 |
| 56 | 1.748188 |
| 57 | 1.755875 |
| 58 | 1.763428 |
| 59 | 1.770852 |
| 60 | 1.778151 |
| 61 | 1.785330 |
| 62 | 1.792392 |
| 63 | 1.799341 |
| 64 | 1.806180 |
| 65 | 1.812913 |
| 66 | 1.819544 |
| 67 | 1.826075 |
| 68 | 1.832509 |
| 69 | 1.838849 |
| 70 | 1.845098 |
| 71 | 1.851258 |
| 72 | 1.857332 |
| 73 | 1.863323 |
| 74 | 1.869232 |
| 75 | 1.875061 |
| 76 | 1.880814 |
| 77 | 1.886491 |
| 78 | 1.892095 |
| 79 | 1.897627 |
| 80 | 1.903090 |
| 81 | 1.908485 |
| 82 | 1.913814 |
| 83 | 1.919078 |
| 84 | 1.924279 |
| 85 | 1.929419 |
| 86 | 1.934498 |
| 87 | 1.939519 |
| 88 | 1.944483 |
| 89 | 1.949390 |
| 90 | 1.954243 |
| 91 | 1.959041 |
| 92 | 1.963788 |
| 93 | 1.968483 |
| 94 | 1.973128 |
| 95 | 1.977724 |
| 96 | 1.982271 |
| 97 | 1.986772 |
| 98 | 1.991226 |
| 99 | 1.995635 |
| 100 | 2.000000 |