Online Calculators > Math Calculators > Natural Log Calculator

Natural Log Calculator

Natural Log Calculator to calculate the natural logarithm of a number. The natural logarithm of x is the base e logarithm of x which can be written as ln(x) or loge(x). Enter a number below, and the ln Calculator will calculate the result instantly.

ln Calculator

ln
Result

What is natural log?

The natural logarithm of a number is its logarithm to the base of e where e is approximately 2.718281828459. The natural logarithm of e, ln(e) = 1, because e1 = e, and the natural logarithm of 1 is 0, because e0 = 1.

Natural Log

Following is natural log table that shows ln(1) up to ln(100) calculated by our natural logarithm calculator.

x ln(x)
10
20.69314718056
31.09861228867
41.38629436112
51.60943791243
61.79175946923
71.94591014906
82.07944154168
92.19722457734
102.30258509299
112.3978952728
122.48490664979
132.56494935746
142.63905732962
152.7080502011
162.77258872224
172.83321334406
182.8903717579
192.94443897917
202.99573227355
213.04452243772
223.09104245336
233.13549421593
243.17805383035
253.21887582487
263.25809653802
273.295836866
283.33220451018
293.36729582999
303.40119738166
313.43398720449
323.4657359028
333.49650756147
343.52636052462
353.55534806149
363.58351893846
373.61091791264
383.63758615973
393.66356164613
403.68887945411
413.7135720667
423.73766961828
433.76120011569
443.78418963392
453.80666248977
463.82864139649
473.85014760171
483.87120101091
493.89182029811
503.91202300543
513.93182563272
523.95124371858
533.97029191355
543.98898404656
554.00733318523
564.02535169074
574.04305126783
584.06044301055
594.07753744391
604.09434456222
614.11087386417
624.12713438505
634.14313472639
644.15888308336
654.1743872699
664.18965474203
674.20469261939
684.21950770518
694.2341065046
704.24849524205
714.26267987704
724.27666611902
734.29045944115
744.3040650932
754.31748811354
764.33073334029
774.34380542185
784.35670882669
794.36944785247
804.38202663467
814.39444915467
824.40671924726
834.4188406078
844.43081679884
854.44265125649
864.45434729625
874.46590811865
884.47733681448
894.48863636973
904.49980967033
914.51085950652
924.52178857705
934.53259949315
944.54329478227
954.5538768916
964.56434819147
974.5747109785
984.58496747867
994.59511985013
1004.60517018599
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