Date and Time Calculator

Count the days between two dates or add and subtract time from any date.

       
Date Difference
Add/Subtract
Age Calculator
Stopwatch
Time Zone
Date Difference
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Total Days
0
0
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Hours
Minutes
Result Date
Select Date
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Age Calculation
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Years Old
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0
0
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00:00:00.000
Lap Times
Time Zone Conversion
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Current Time

About Date & Time Calculations

Date and time calculations are essential for scheduling, planning, age calculation, and time management.

Key Concepts:

  • Date Difference: Calculate days between two dates
  • Date Arithmetic: Add or subtract days from a date
  • Age Calculation: Calculate exact age in years, months, days
  • Time Zones: Convert between different time zones

Common Uses:

  • Project deadlines and timelines
  • Age verification and birthday calculations
  • International meeting scheduling
  • Countdown to events
  • Time tracking and stopwatch functionality
What the date calculator doesWhat the date calculator does: Pick dates start and end; Choose difference or add; Result days, weeks, months1Pick datesstart and end2Choosedifference or add3Resultdays, weeks, months
Three steps to count days between dates or move a date forward or back.

What you can do with it

Use the date calculator to find the number of days, weeks or months between two dates, to see what date falls a set number of days after another, or to work backwards from a deadline. It is helpful for notice periods, application closing dates, pregnancy and course schedules, loan tenures, warranty expiry and project planning.

How the calculation works

Dates are converted to calendar days and compared directly, so leap years and different month lengths are handled for you. When you add months, the day-of-month is kept where it exists; adding one month to 31 January gives the last day of February.

Practical examples

Need someone's exact age on a cut-off date? Use the age calculator.

Worked examples

Weekdays and working days

The tool can count weekdays only (Monday to Friday), which helps estimate working days for deadlines, delivery times and notice periods. It does not know public holidays, so subtract those separately, for example Eid holidays and national days.

Time zones

The time-zone section converts a local time to another zone. Pakistan Standard Time is UTC+5 and does not use daylight saving, while many other countries shift their clocks, so the gap with the UK or US changes during the year. Always confirm meeting times for overseas clients in both zones.

Find someone's exact age with the age calculator, plan study around exam dates with the study planner, or work out the length of a loan with the loan EMI calculator. Counting days to a job deadline? See the government jobs guide, or check scholarship timelines in the scholarships guide.

Frequently asked questions

How many days are between two dates?

Enter both dates and the tool shows the difference in days, weeks, months and years.

Does it include the end date?

The difference counts days between the dates. Add one day if you want to count both the start and end dates.

Can I subtract days from a date?

Yes. Use the add or subtract option with a negative number or the subtract mode.

Does it handle leap years?

Yes, calendar rules are applied automatically.

Related tools and guides

Last reviewed: October 2026. See our editorial policy.