Free date utilities
Date, age and business-day calculators
Calculate dates, elapsed days, business days, weeks, months, exact age and countdowns without sending or saving your inputs.
Calculated date and time
Date calculator
Add or subtract days, weeks, months or hours from a starting date and time.
Days between dates
Days between dates calculator
Measure elapsed calendar days between two dates and show inclusive and exclusive counts.
Weekdays in range
Business days calculator
Count Monday-to-Friday weekdays between two dates, with an optional inclusive end date.
Elapsed weeks
Weeks between dates calculator
Translate the elapsed span between two dates into complete weeks and remaining days.
Complete months between dates
Months between dates calculator
Count complete calendar months and remaining days between two dates.
Exact age
Age calculator
Calculate exact age in completed years, months and days on a chosen reference date.
Time remaining
Countdown calculator
Measure the days, hours and minutes remaining until a future local date and time.
Difference between the dates
Date difference calculator
Measure the whole span between two dates as years, months and days, with total days, weeks and hours shown alongside.
Days until the target date
Days until date calculator
Count the days remaining between today and a future date, with a years, months and days breakdown.
Days since the date
Days since date calculator
Count the days that have elapsed between a past date and today, with a years, months and days breakdown.
Hours between the two moments
Hours between dates calculator
Measure the elapsed hours between two dates and times, including spans that cross days or months.
Complete years between the dates
Years between dates calculator
Find how many years, months and days are between two dates: the complete calendar years first, then the remaining months and days, with the whole span also given in total months, weeks and days.
Age difference
Age difference calculator
Compare two dates of birth and see the exact age gap in years, months and days.
Days lived
Age in days calculator
Convert a date of birth into total days lived, along with the equivalent hours, minutes, weeks and years.
ISO week number
Week number calculator
Find the ISO-8601 week number for any date, along with its day of the year and calendar quarter.