Calculators

Quick online calculators for percentages, discounts, age, and everyday math.

All Calculators

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

Calculate exact age in years, months, and days from a birth date.

Calculate sale price and savings from original price and discount percentage.

Calculate the mean (average) of a list of numbers.

Calculate sales tax amount and total price from subtotal and tax rate.

Calculate profit margin and markup from cost and selling price.

Calculate monthly loan payments, total interest, and total amount paid.

Calculate basic probability rules: AND, OR, and complement.

Calculate GST amount and gross or net price for any GST rate.