Math & calculators

A simple online calculator for everyday arithmetic, add, subtract, multiply, divide. Runs in your browser.

Work out percentages: X% of Y, X is what % of Y, and percentage change. Runs in your browser.

Calculate simple and compound interest for any amount and time. Runs in your browser.

Convert CGPA to percentage and back. Runs entirely in your browser.

Evaluate expressions with roots, powers, trig, and logs. Runs entirely in your browser.

Calculate your weighted GPA across courses by grade points and credits. Runs in your browser.

Simplify fractions to lowest terms and convert decimals to fractions. Runs in your browser.

Simplify a ratio to its lowest terms. Runs entirely in your browser.

Plot y = f(x), powers, roots, trig, and logs, on an interactive graph. Runs in your browser.