Calculators

Quick, accurate everyday math: percentages, loans, discounts and more.

Calculate percentages, percentage increases, decreases and percentage differences quickly and accurately with clear step-by-step formulas.

Calculate exact age from a date of birth in years, months and days. See your next birthday, total days lived and more - all in your browser.

Estimate monthly payments on a loan, see total interest and total cost, and review a full month-by-month amortization schedule.

Find the final price after a discount and the exact amount you save. Works for sale prices, vouchers and percentage markdowns.

Calculate profit, profit margin and profit percentage from cost price and selling price. Clear results for pricing decisions.

Simplify ratios, scale them to an equivalent ratio and compare two ratios. Handy for recipes, mixes, geometry and proportions.

A full scientific calculator with trigonometry, logarithms, powers, roots, constants and DEG/RAD modes. Safe expression parser, no eval.