Date & Time
Calculate precise durations between timestamps, find future deadlines with workday exclusions, and discover your exact age down to the day with leap year safety.
Browse All Tools (28)
100% Free & VerifiedAge Calculator
Calculate your exact age in years, months, weeks, days, hours, and minutes with leap year precision.
Date Difference Calculator
Calculate the exact number of days, weeks, months, years, and business working days between two dates.
Date Calculator
Add or subtract days, weeks, months, or years from any date to find the target future or past calendar date.
Time Calculator
Add, subtract, and calculate elapsed time duration in hours, minutes, and seconds.
Days Between Dates Calculator
Calculate the total number of calendar days between two dates with optional inclusive counting and weekend breakdowns.
Business Days Calculator
Calculate the exact number of business working days between two dates with customizable weekends and holiday deductions.
Add Days to Date Calculator
Add any number of days to a starting date to calculate the exact future date, day of the week, and year day.
Subtract Days from Date Calculator
Subtract any number of days from a date to calculate the exact past calendar date and day of the week.
Add Business Days Calculator
Add working business days to a starting date, automatically skipping weekends to calculate exact delivery deadlines.
Days Until Date Calculator
Find out exactly how many days, business days, and weeks are left until any upcoming target date or event.
Weeks Between Dates Calculator
Calculate the total number of full weeks, remaining days, and decimal weeks between any two calendar dates.
Months Between Dates Calculator
Calculate the exact number of full calendar months, extra days, and decimal months between two dates.
Years Between Dates Calculator
Calculate the exact number of full calendar years, remaining months, decimal years, and leap years traversed between two dates.
Date Duration Calculator
Calculate the full decomposed duration between two dates in years, months, weeks, days, hours, and seconds.
Time Between Dates Calculator
Calculate the exact elapsed time between two dates and timestamps in hours, minutes, seconds, and decimal days.
Quarter Calculator
Find which calendar quarter (Q1, Q2, Q3, Q4) or fiscal quarter a date falls in, along with start/end dates and progress.
Day of Week Calculator
Find out the exact day of the week for any past, present, or future calendar date with historical Gregorian calendar accuracy.
Day of Year Calculator
Calculate the ordinal day number of the year (Day 1 to 365/366), days remaining, and percentage of the year passed.
Week Number Calculator
Calculate the official ISO 8601 week number (Week 1 to 53) of any date, week start/end dates, and remaining weeks.
Leap Year Calculator
Check if any year is a leap year (366 days) with full Gregorian 400-year rule verification, February 29 status, and upcoming leap years.
Countdown to Date Calculator
Create a live real-time countdown timer to any upcoming event, holiday, birthday, or deadline.
Birthday Calculator
Calculate days until your next birthday, the day of the week you were born on, milestone birthdays, and zodiac sign.
Half-Birthday Calculator
Calculate the exact date of your next half-birthday (+6 months), days remaining, and day of the week.
Anniversary Calculator
Track wedding and relationship anniversary milestones, total days married, next anniversary date, and traditional/modern gifts.
Date Milestone Calculator
Calculate the exact dates when reaching major lifecycle milestones: 1,000 days, 5,000 days, 10,000 days, 100 weeks, and 500 months.
Retirement Date Calculator
Calculate your exact retirement date based on your date of birth, target retirement age, and working days remaining.
Pregnancy Due Date Calculator
Calculate your estimated pregnancy due date (EDD) using Naegeleās Rule, current gestational age in weeks, and trimester milestones.
Conception Date Calculator
Reverse calculate estimated conception date, ovulation day, and fertile window based on your pregnancy due date.