- Enter Number — The value x.
- Set Base — The logarithm base b.
- Calculate — See log_b(x), ln(x), log₁₀(x), log₂(x).
Logarithm Calculator
Calculate logarithms in any base, plus ln, log₁₀, and log₂.
Privacy
All calculations run in your browser.
Logarithm Calculator — Free Log Calculator Any Base
Free logarithm calculator with custom base, natural log (ln), log₁₀, and log₂ — 100% client-side. 100% serverless.
🔒 100% Private
⚡ Completely Free
🌐 Runs in Browser
📦 Export Ready
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Logarithm Calculator — Free Log Calculator Any Base
Tool Workspace
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Frequently Asked Questions
What bases are shown?
Custom base, natural (e), base 10, and base 2.
Is my data safe?
Yes. 100% in your browser.