Time & Date Calculators

Age, half-birthday, and date-based calculators.

Age CalculatorCalculate your exact age in years, months, and days — plus a live countdown to your next birthday.

Half Birthday CalculatorFind the exact date of your half birthday — exactly 6 months after your date of birth.

Date Difference CalculatorFind the exact difference between two dates in years, months, and days — with total days, total weeks, and step-by-step working.
Days Between Dates CalculatorCount the exact number of days between any two dates — with total weeks, decimal weeks, and a calendar breakdown.

Time Duration CalculatorCalculate the exact duration between two times in hours, minutes, and seconds — including overnight spans and decimal hours.