Log Base 3 of 7

Logarithm Calculator
Log base
x

What is log₃ 7?

Answer

log3 7 ≈
1.7712

log3 is the log base 3.

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

log3 7 is the power you raise 3 to, to get 7: 3y = 7.

3¹ = 3 < 7 < 9 = 3², so 1 < log3 7 < 2

log3 7 = ln 7 / ln 3 ≈ 1.945910 / 1.098612 ≈ 1.7712

Oxy1

Answer point ≈ (7, 1.7712).

The curve y = log3 x passes through (1, 0) and (3, 1) and rises: for x > 1 the log is positive, for 0 < x < 1 negative.

Log of 7 in different bases
BaseNotationValue
eln 7≈ 1.9459
10log 7≈ 0.8451
2log₂ 7≈ 2.8074
3log₃ 7≈ 1.7712

See Also

Log base 3 of nearby numbers

FAQ

What is log₃ 7?

log₃ 7 ≈ 1.7712

How to calculate log₃ 7 on a calculator?

Divide the natural logs: log₃ 7 = ln 7 / ln 3 ≈ 1.945910 / 1.098612 ≈ 1.7712.

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.