Calculate Logarithm
log₁₀(100)
2
2.0000
log₁₀ (common log)
4.6052
ln (natural log)
6.6439
log₂ (binary log)
Antilogarithm (Inverse Log)
Find x when log_b(x) = y
100
10² = 100
Logarithm Rules Reference
| Rule | Formula |
|---|---|
| Product Rule | log(xy) = log(x) + log(y) |
| Quotient Rule | log(x/y) = log(x) - log(y) |
| Power Rule | log(xⁿ) = n × log(x) |
| Change of Base | log_b(x) = log(x) / log(b) |
| Log of 1 | log(1) = 0 |
| Log of Base | log_b(b) = 1 |