Evaluate ln(100)

Evaluate logarithms — log, ln, and any base — step by step.

Expression
Answer
4.605170

To evaluate ln(100), find the exponent you must raise e (Euler's number, ≈ 2.71828) to in order to get 100.

Step 1 — Recall the definition

The natural logarithm ln(x) is the logarithm with base e:

ln(100) = n means en = 100

Step 2 — Evaluate

ln(100) does not simplify to a nice closed form. Use the definition or a calculator:

ln(100) ≈ 4.605170

This means e^4.605170 ≈ 100.

ln(100) ≈ 4.605170

How to evaluate ln(100)

Evaluate ln(100) using logarithm properties and rules.

This is a Logarithm — logarithmic evaluation

Frequently asked questions

What is the answer to ln(100)?
The answer is 4.605170.

What method is used?
log(x) is the common logarithm (base 10). ln(x) is the natural logarithm (base e). log base b of x asks: what power of b gives x?

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