General & Everyday Calculators
Calculators for daily life — percentages, tips, dates and quick math. 7 free tools and counting.
Percentage Calculator
Find a percent of a number, percentage change, and what % one number is of another.
Tip Calculator
Split a bill fairly and work out the tip per person in seconds.
Discount Calculator
Work out the sale price and how much you save from a percentage discount.
Average Calculator
Find the mean, sum and count of any list of numbers.
Ratio Calculator
Solve and scale ratios, and reduce them to simplest form.
Age Calculator
Find an exact age in years, months and days from a date of birth.
Date Difference
Count the days, weeks and months between any two dates.