Is Logarithm Calculator free to use?

Yes, Logarithm Calculator is completely free. No account, no sign-up, and no hidden fees required.

Is my data safe when using Logarithm Calculator?

Your data never leaves your device. All processing happens locally in your browser — nothing is uploaded to any server.

Calculators

Calculate log base b of x — auto-shows ln, log₁₀, and log₂ side by side using the change-of-base formula

Trusted by 10k+ developers

Argument (x > 0)

Base (≠ 1, > 0)

log₁₀(1000) =

3.00000000

log₁₀ x

3.000000

ln x

6.907755

log₂ x

9.965784

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