Can I compute natural log?

Yes, set the base to Euler's number, approximately 2.71828.

What if the value or base is invalid?

The result field shows a dash when the value is non-positive or the base is invalid.

Can exponents be negative or fractional?

Yes, any real exponent is supported.

Is my data uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your input never leaves your device and nothing is logged or stored on our servers.

Does it work offline and on mobile?

Yes. Once the page has loaded it keeps working without a network connection, and the layout is responsive so it stays usable on phones and tablets.

Logarithm & Exponent Calculator

Compute logarithms of any base and exponentiation results.

Support

Works Offline

Privacy First

No Login

No API

Logarithm

log_base(value)

Value

Base

Result

2.00000000

Exponentiation

base ^ exponent

Base

Exponent

Result

1024

About the Logarithm & Exponent Calculator

Calculate the logarithm of a value with any positive base, and separately compute exponentiation (base raised to an exponent), all client-side.

Examples

log base 10 of 100

log_10(100)

Output

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

Related tools

Fraction Calculator

Math & Numbers

Add, subtract, multiply, divide, and simplify fractions.

Number Sequence Generator

Math & Numbers

Generate arithmetic, geometric, or Fibonacci-like number sequences.

Prime Checker

Math & Numbers

Check primality, factorize numbers, list primes, and compute GCD/LCM.

Quadratic Equation Solver

Math & Numbers

Solve ax² + bx + c = 0 with real or complex roots.

Scientific Notation Converter

Math & Numbers

Convert between decimal, scientific, and engineering notation.

BMI Calculator

Math & Numbers

Calculate your Body Mass Index and healthy weight range.

Frequently asked questions

Version 1.0.0 · Updated 2026-08-07 · Runs entirely in your browser