Logarithm Calculator — Solve logₐ(b) fast & visualize

Logarithm Calculator

Compute logarithms with any base, visualize the function, and explore values. Perfect for students, engineers, and math enthusiasts.

Step 1: Logarithm parameters

For custom base, you can edit the base field.
4

Logarithm rules

logₐ(b) = ln(b)/ln(a). Domain: x > 0, base > 0, base ≠ 1. The calculator handles these automatically.

Step 2: Graph & table settings

50

Graph tips

Adjust X range to zoom. For x ≤ 0 the log is undefined — use positive values.

Logarithm results

Summary
Graph
Table

log result

2.3026
ln(100) = 4.6052 (base e)
Log₁₀(x)
2.0000
ln(x)
4.6052
log₂(x)
6.6439
Antilog (10^x)
100.0

log₁₀ for integers 1‑10

Logarithmic curve

Current x
100
logₐ(x)
4.6052
Base used
e
Undefined?
no

Common values (1..10) for different bases

xlog₁₀(x)ln(x)log₂(x)

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