Calculator

Measure the spread of a dataset with quartiles and interquartile range.

Solve a two-equation linear system for x and y using coefficients in standard form.

Solve a basic linear equation for x from coefficients in the form ax plus b equals c.

Calculate logarithms for algebra, exponential growth work, and quick inverse power checks.

Calculate powers from a base and exponent for algebra, 科学, and quick number checks.

Measure cost per lead from campaign spend and the number of leads generated.

Estimate take-home pay from annual salary, tax withholding, deductions, and pay frequency.

Estimate the impact of a pay raise on annual and monthly income.

Build a quick monthly budget by comparing income with expenses and savings targets.

Estimate the monthly savings needed to hit a future goal using current savings, rate, and time.