Convertools

Natural Log Calculator

Calculate the natural logarithm ln(x) using base e for positive inputs.

Author

Dr. Fatima Al-Rashidi

Math editorial contributor

Kuwaiti epidemiologist trained at Johns Hopkins, leading WHO initiatives on maternal health in the Gulf region

Reviewed by

Dr. Isabella Rossi

Math content reviewer

Italian neuroscientist at Sapienza University of Rome, studying the neural mechanisms of bilingual language processing

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. Reference values
  2. Calculator
  3. Reference table
  4. FAQs
  5. Methodology and review
  6. Related conversions

6 Number =

1.791759 ln(x)

Representative value from the Natural Log Calculator reference table.

Reference Values

Browse 20 reference values with individual detail pages for quick lookup.

Browse all reference values

Natural Log Calculator

Calculate the natural logarithm ln(x) using base e for positive inputs.

Calculated Result

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Reference Table

Use this complete table for quick lookup and internal linking to specific value pages.

Natural Log Calculator Reference
Number (x)Natural Log ln(x)
0.1 Number-2.302585 ln(x)
0.2 Number-1.609438 ln(x)
0.25 Number-1.386294 ln(x)
0.5 Number-0.693147 ln(x)
0.75 Number-0.287682 ln(x)
1 Number0 ln(x)
2 Number0.693147 ln(x)
3 Number1.098612 ln(x)
4 Number1.386294 ln(x)
5 Number1.609438 ln(x)
6 Number1.791759 ln(x)
7 Number1.94591 ln(x)
8 Number2.079442 ln(x)
9 Number2.197225 ln(x)
10 Number2.302585 ln(x)
20 Number2.995732 ln(x)
30 Number3.401197 ln(x)
50 Number3.912023 ln(x)
75 Number4.317488 ln(x)
100 Number4.60517 ln(x)

Frequently Asked Questions

Common questions about Natural Log Calculator, formulas, and typical use cases.

What does the Natural Log Calculator calculator do?

It calculates working with exponential growth/decay, continuous compounding, and scientific models from the values you enter.

What formula does the Natural Log Calculator calculator use?

Natural log is the logarithm base e: ln(x).

What inputs are valid?

For real-number results, enter x > 0.

When would I use this?

working with exponential growth/decay, continuous compounding, and scientific models

Methodology and Review

This page combines a live calculator, precomputed reference values, and FAQ content from the same conversion definition to reduce mismatch between calculator output and lookup tables.

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For compliance-sensitive work, verify final values against project requirements, governing standards, and manufacturer documentation.