Logarithm Calculator
Calculate logarithms in base 2, base 10, natural (ln), and any custom base. Shows all common logarithm values at once.
How to Use Logarithm Calculator
The Logarithm Calculator computes log values in multiple bases simultaneously. Enter any positive number and instantly see log₂ (base 2, used in computer science), log₁₀ (base 10, common logarithm), ln (natural logarithm, base e), and optionally a custom base logarithm. The change of base formula log_b(x) = ln(x) / ln(b) is used for custom bases. Essential for math students, engineers, computer scientists working with binary logarithms, and scientists using natural or common logs. Results are shown to 8 decimal places for precision. All calculations happen locally in your browser.
Step-by-Step Instructions
- Enter the value (x) to calculate the logarithm of
- Optionally enter a custom base for an additional calculation
- Click Calculate to see all logarithm values
- Copy the results using the copy button
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