Math Tools

Project investment growth with principal, recurring contribution, annual return, and compounding frequency.

Calculate gross margin, markup, profit, cost, and selling price relationships.

Calculate percentage of a number, percentage change, and what percent one value is of another.

Calculate sale price, discount amount, and savings percentage.

Convert numbers between binary, octal, decimal, and hexadecimal with instant validation.

Generate random integers or decimals within a chosen range for testing, games, and sampling.

Calculate mean, median, minimum, maximum, range, and count from pasted numeric values.

Calculate body mass index from metric or imperial inputs with a simple category summary.

Estimate break-even units and revenue from fixed cost, price, and variable cost.

Convert simple fractions to decimals and percentages.

Estimate loan payment and total interest from principal, annual rate, and term.

Estimate monthly mortgage payments from principal, interest rate, loan term, taxes, and insurance.

Check whether an integer is prime and list the factors when it is composite.

Simplify two-number ratios and calculate matching scaled values for layouts, recipes, and comparisons.

Calculate tax amount and after-tax total from price and tax rate.

Calculate mean, variance, sample standard deviation, and population standard deviation.

Calculate tips, totals, and per-person split amounts for bills.

Calculate z-scores from value, mean, and standard deviation.