Calculate natural logarithm, base-10 logarithm, and logarithm of any custom base.
Calculate natural logarithm, base-10 logarithm, and logarithm of any custom base.
log_b(x) = ln(x) / ln(b)
ln(100) ≈ 4.605; log₁₀(100) = 2.
Enter your values in the fields above and click "Calculate" to get instant results. All calculations happen in your browser — nothing is sent to any server.
What is Logarithm Calculator?
Calculate natural logarithm, base-10 logarithm, and logarithm of any custom base.
What formula does this use?
This calculator uses: log_b(x) = ln(x) / ln(b)
Is this calculator free?
Yes! All calculators on CalcNest AI are 100% free with no account required.
Is my data safe?
Absolutely. All calculations run locally in your browser. We never store or transmit your input data.