Category
Everyday calculators
Dates, ages, tips, grades and other daily-life answers.
Age CalculatorExact age in years, months and days, plus the next birthday.Date CalculatorDays between two dates, or add and subtract time from a date.Tip CalculatorTip amount, total and the split per person.GPA CalculatorGrade point average on the 4.0 scale, weighted by credits.Discount CalculatorSale price after a percentage off, and what you save.Fuel Cost CalculatorCost of a trip from distance, efficiency and fuel price.Work Hours CalculatorHours worked from a start time, end time and break.
How to get a reliable answer
Every calculator on this page runs entirely in your browser, so nothing you type is sent to a server or stored. Enter your own figures rather than the defaults, check the units next to each field, and read the breakdown under the main result — it shows how the number was reached so you can sanity-check it against your own paperwork.