EVERYDAY LIFE

Date and time calculators

Free date calculator for counting the days, weeks, months and years between two dates. The page explains its method, inputs and limits.

12 tools to exploreCHOOSE YOUR STARTING POINT

Age calculatorCalculate your exact chronological age in years, months, days, hours and minutes from your date of birth, with the countdown to your next birthday.Date calculatorDate calculator: count the days, weeks, months and years between two dates, with the number of weekdays and an option to include the end date.Time calculatorCalculate the exact duration between two times in hours, minutes and seconds, with support for overnight shifts that cross past midnight.Zone time calculatorConvert times across major global time zones including London, New York, Tokyo and Sydney, with time differences and day change indicators.Working days calculatorCalculate the number of working business days between two dates in the UK, excluding weekends and official statutory bank holidays per nation.Work hours calculatorCalculate weekly working hours, overtime premiums and gross pay under UK Working Time Regulations, with unpaid meal break deductions.Date of week calculatorFind the exact day of the week for any past, present or future date, with the day of the year, ISO week number and leap year calendar details.Time addition calculatorAdd or subtract multiple time intervals in hours, minutes and seconds to find combined elapsed time, total minutes and decimal hour values.Age difference calculatorCalculate the exact age difference between two people in years, months and days, compare milestones, and check the conventional age guideline.Hours to decimal calculatorConvert hours, minutes and seconds into decimal hours for payroll and client invoicing, with total earnings calculated at your hourly pay rate.Working days calculator USCalculate net business working days between two dates in the US, excluding weekends and official federal statutory public holidays under 5 U.S.C. 6103.Work hours calculator USCalculate weekly timesheet hours, FLSA overtime pay at time-and-a-half and estimated gross wages in the US, with unpaid meal break deductions.

Have something else in mind?Suggest a calculator

CALCULATOR INPUTS AND METHODS

Date & time calculator inputs and methods

Choose the calculation that matches your question and the inputs you have. Each calculator in the date and time calculators collection explains its inputs, method and result limitations.

Explore our standards

BROWSE THE CALCULATOR COLLECTION

Find a calculator by category

Explore calculators