Question 1

What is a logarithm?

Accepted Answer

The power to which a base must be raised. log₁₀(100) = 2 because 10² = 100. Inverse of exponentiation.

Question 2

What are common and natural logarithms?

Accepted Answer

Common log (log₁₀): base 10, written log. Natural log (ln): base e≈2.718. ln(e) = 1, log(10) = 1.

Question 3

How accurate are these calculations?

Accepted Answer

Our calculator uses double-precision floating-point arithmetic, accurate to about 15-16 significant digits for most calculations.

Question 4

Can I use the result in further calculations?

Accepted Answer

Yes, results are calculated to full precision. You can copy the exact value or use the rounded display depending on your needs.

Logarithm Calculator - Free Online Tool

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