Time & Date Calculators

Time Zone Converter

Convert any time between UTC offset zones instantly.

Leap Year Calculator

Calculate leap year in seconds with this free time Leap Year Calculator. No signup needed; formula and examples included.

Time Add Calculator

This free Time Add Calculator helps you work out time add fast — with the formula, real-number examples, and FAQs.

Age Calculator

Calculate your exact age in years, months, and days.

Hours Calculator

Add and subtract hours and minutes for time tracking.

Countdown Timer

Set a countdown to any future date or event.

Date Difference Calculator

Find the number of days between two dates.

Business Days Calculator

Count working days between two dates, excluding weekends.

Time Card Calculator

Calculate total hours worked from time card entries.

Work Hours Calculator

Calculate weekly work hours and overtime pay.

Hours Minutes Calculator

Add, subtract, and convert hours and minutes.

Time to Decimal Calculator

Convert time in HH:MM format to decimal hours.

Decimal to Time Calculator

Convert decimal hours back to hours and minutes.

Sunrise Sunset Calculator

Find sunrise and sunset times for any location and date.

Gross Pay Calculator

Calculate gross pay from hourly rate and hours worked.

Stopwatch Lap Timer

Online stopwatch with lap timing and split recording.

Age Checker

Check if someone meets a minimum age requirement.

Time Date Difference

Calculate the exact time difference between two datetime values.

Time Calculator H:M:S

Add and subtract hours, minutes, and seconds.

Week Number Calculator

Find the ISO week number of any date.