24 FREE TOOLS
Date, Time & Age calculators
Check calendar intervals, working days and milestone dates without counting them by hand.
← All calculators
Age Calculator
Find age in years, months and days between a birth date and reference date.
Date Difference Calculator
Calculate the interval between two dates with clear calendar boundaries.
Days Between Dates Calculator
Count the elapsed days between a start date and an end date.
Add/Subtract Days Calculator
Find a new date by adding or subtracting a number of days.
Business Days Calculator
Count business days with the weekend and holiday settings you choose.
Working Days Calculator
Count working days after excluding selected weekends and entered holidays.
Week Number Calculator
Find the ISO week number associated with a date.
Day of Week Calculator
Look up which day of the week a date falls on.
Time Duration Calculator
Add up an elapsed time interval from start and finish times.
Time Difference Calculator
Compare two dated local times using the UTC offset applicable to each.
Hours Calculator
Convert a time interval into total hours.
Minutes to Hours Calculator
Convert minutes into hours and remaining minutes.
Overtime Hours Calculator
Separate regular hours from overtime using an entered hours threshold.
Countdown Calculator
Count the time remaining until a chosen target date.
Birthday Countdown Calculator
Find the days remaining until the next birthday.
Anniversary Calculator
Calculate completed years and the next anniversary of a date.
Retirement Date Calculator
Estimate a retirement date from a birth date and retirement-age assumption.
Pregnancy Weeks Calculator
Estimate pregnancy weeks and days from the pregnancy reference date.
Chronological Age Calculator
Calculate exact calendar age on a chosen assessment date.
School Age Calculator
Find a child's age on an admission cutoff date.
Financial Year Date Calculator
Identify an Indian financial year and assessment year for a date.
GST Due Date Calculator
Estimate a routine GST due date from return period, due day and extension.
Income Tax Due Date Calculator
Track time remaining to an income-tax filing deadline you enter.
Loan Tenure Date Calculator
Estimate a loan's end date by adding its tenure to the start date.
