Quick reference
- log₁₀(x) — common log, used in pH, decibels, Richter scale
- ln(x) = loge(x) — natural log, used in calculus and continuous growth
- Change-of-base: log_b(x) = ln(x) / ln(b) = log(x) / log(b)
- Antilog: antilog_b(n) = bn
Logarithm calculator
logb(x) — the power b must be raised to in order to equal x. This calculator returns log base 10, natural log (ln), arbitrary base, and the antilog.
Logarithms of x
log₁₀(x)
0
ln(x) — base e
0
log₂(x)
0
logb(x) — custom
0
Change of base: log_b(x) = ln(x) / ln(b)
Antilog
0