Date & Time Calculators

Age, durations, time zones, and work hours.

Age Calculator
Enter your birthdate to see your exact age and days until your next birthday.
Days Between Dates Calculator
Enter a start and end date to see calendar days, business days, and weeks between them.
Date Add / Subtract Calculator
Enter a date and an amount to add or subtract to find the resulting date.
Work Hours Calculator
Enter start time, end time, and break minutes to see hours worked, weekly total, and annual total.
Weeks Pregnant Calculator
Enter your LMP date to find gestational age in weeks and days, trimester, and due date.
Time Zone Converter
Enter a date, time, and source time zone to see the equivalent time worldwide.