Compute log base 10, natural log (ln) or log base 2 of any number.
Calculate logarithms with base 10, e (natural) or 2.
Enter number and choose base.
log_b(x) = ln(x)/ln(b)
Input must be positive.
Logarithm with base e ≈ 2.71828.
Calculate percentages, find what percent one number is of another, and compute percentage…
A full-featured scientific calculator with trigonometry, logarithms, exponents, memory an…
Add, subtract, multiply and divide fractions, with simplified result and decimal.
Simplify any ratio A:B to its lowest terms.
Solve for the missing value in a proportion A:B = C:D.