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Sumivo · Math

Logarithm Calculator

Find the exponent to which a base must be raised to produce a value.

01 / inputs

value
base

02 / result

LOGARITHM

3

log base 10
3
Input value
1000

Calculation trace

  1. ln(1,000) ÷ ln(10) = 3
    3
    Change of base
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How it works

The logarithm answers which exponent produces a value from a given base. The calculator uses the change-of-base formula ln(value) / ln(base).

Assumptions & limits

  • The value and base must be positive and finite, and the base cannot be 1. Results use JavaScript number arithmetic.
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