Logarithm Calculator
Solve logarithms for any base, including natural (ln) and common (log10) logs.
Local-first
Use 10 for common log, e ≈ 2.718 for ln
log10(100)
2.000000
How this tool works
What it accepts, how to use it, and where your input is processed.
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How this tool works
What it accepts, how to use it, and where your input is processed.
Show GuideHide Guide
A Logarithm is the exponent to which a fixed number (the base) must be raised to produce a given number. Our tool handles any base instantly with high precision.
Key Bases:
- Common Log (Base 10): The standard for many physical measurements like pH or decibels.
- Natural Log (Base e): Essential in calculus, physics, and financial modeling.
- Binary Log (Base 2): Frequently used in computer science and information theory.
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