Log Base 4 of 5

Logarithm Calculator
Log base
x

What is log₄ 5?

Answer

log4 5 ≈
1.1610

log4 is the log base 4.

≈ — the logarithm is irrational; the value is rounded to 4 decimal places.

log4 5 is the power you raise 4 to, to get 5: 4y = 5.

4¹ = 4 < 5 < 16 = 4², so 1 < log4 5 < 2

log4 5 = ln 5 / ln 4 ≈ 1.609438 / 1.386294 ≈ 1.1610

Oxy1

Answer point ≈ (5, 1.1610).

The curve y = log4 x passes through (1, 0) and (4, 1) and rises: for x > 1 the log is positive, for 0 < x < 1 negative.

Log of 5 in different bases
BaseNotationValue
eln 5≈ 1.6094
10log 5≈ 0.6990
2log₂ 5≈ 2.3219
4log₄ 5≈ 1.1610

See Also

Log base 4 of nearby numbers

FAQ

What is log₄ 5?

log₄ 5 ≈ 1.1610

How to calculate log₄ 5 on a calculator?

Divide the natural logs: log₄ 5 = ln 5 / ln 4 ≈ 1.609438 / 1.386294 ≈ 1.1610.

What does log without a base mean?

At school and on a calculator, log x without a base is the common log, base 10: log 100 = 2. In Python, math.log(x) is the natural log ln x; in Excel, LN is the natural log and LOG is base 10.