Log Calculator

Your details

Choose which quantity to solve for. Log finds the exponent, antilog finds the original number, and Find base recovers the base.
Base 10 is used in science and engineering. Base e (approx 2.71828) is used in mathematics and physics. Base 2 is fundamental in computer science.
The positive number whose logarithm you want. Must be greater than zero.
Result
2

The computed value (y for log mode, x for antilog, b for find-base).

What was foundlog10(100) = y
Common log (base 10)2
Natural log (ln)4.60517
Binary log (base 2)6.643856
Change-of-base breakdownln(100) / ln(10.0000) = 4.605170 / 2.302585 = 2.000000
log10(x)2
ln(x)4.60517
log2(x)6.643856

log_10(100) = 2.000000

  • Common log (base 10): log10(100) = 2.000000
  • Natural log (ln): ln(100) = 4.605170
  • Binary log (base 2): log2(100) = 6.643856
  • The result means 10 raised to the power 2.000000 equals 100.

Next stepTo verify: enter the base and the result into antilog mode to recover the original number.

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