📊 Logarithm Calculator
Calculate logarithms, natural logarithms and antilogarithms
logb(x) = y
Result
log₂(8) = 3
log₂(16) = 4
log₁₀(100) = 2
log₁₀(1000) = 3
log₃(27) = 3
log₅(125) = 3
log₁₀(x)
Result
ln(x)
Result
10x
Result
Logarithm Rules
A logarithm answers the question: “To what power must the base be raised?”
logb(x) = y means by = x .
- logb(xy) = logb(x) + logb(y)
- logb(x/y) = logb(x) − logb(y)
- logb(xn) = n logb(x)
- logb(1) = 0
- logb(b) = 1