11 tools
Time & Date Calculators
Date, age, duration, countdown and calendar utilities.
Age Calculator
Calculate exact elapsed years, months, and days from a birth date.Date Difference Calculator
Find the number of days between two dates.Days Until Calculator
Count days from today to a target date.Add Days Calculator
Add calendar days to a date.Workdays Calculator
Estimate weekdays between two dates, excluding Saturdays and Sundays.Time Duration Calculator
Calculate elapsed minutes between two clock times on the same or following day.Hours to Decimal Calculator
Convert hours and minutes into decimal hours.Decimal to Hours Minutes Calculator
Convert decimal hours into hours and minutes.Birthday Countdown Calculator
Count days until the next occurrence of a birthday.Leap Year Calculator
Check whether a year is a Gregorian leap year.Unix Timestamp Converter
Convert a Unix timestamp in seconds to UTC date and time.
Calculate exact elapsed years, months, and days from a birth date.Date Difference Calculator
Find the number of days between two dates.Days Until Calculator
Count days from today to a target date.Add Days Calculator
Add calendar days to a date.Workdays Calculator
Estimate weekdays between two dates, excluding Saturdays and Sundays.Time Duration Calculator
Calculate elapsed minutes between two clock times on the same or following day.Hours to Decimal Calculator
Convert hours and minutes into decimal hours.Decimal to Hours Minutes Calculator
Convert decimal hours into hours and minutes.Birthday Countdown Calculator
Count days until the next occurrence of a birthday.Leap Year Calculator
Check whether a year is a Gregorian leap year.Unix Timestamp Converter
Convert a Unix timestamp in seconds to UTC date and time.
About our Time & Date tools
Date, age, duration, countdown and calendar utilities. Each page puts the calculator near the top, followed by a formula, example, interpretation notes, limitations and links to related tools.
Choose the right calculator
Start with the tool whose title most closely matches the problem you are trying to solve. Keep units and time periods consistent, and check page-specific assumptions before using the result for a decision. When a calculation affects health, money, safety, compliance or engineering work, confirm the output with a qualified source.