Date and time calculators

Plan events, track deadlines, and compute durations with our date and time calculators. Calculate exact age, days between dates, countdowns, work hours, and time-zone differences with precision.

Popular Date & Time Calculators

Age Calculator — Calculate your exact age in years, months, days, hours, and minutes from your birth date.
Date Calculator — Add or subtract days, months, and years from a date.
Time Calculator — Add and subtract time durations (hours, minutes, seconds).
Days Between Dates Calculator — Calculate the number of days between two dates.
Work Hours Calculator — Calculate work hours, overtime, and total pay for time tracking.
Countdown Calculator — Create real-time countdowns to any future date and time.
Working Days Calculator — Calculate business days between dates, excluding weekends.
Age Difference Calculator — Calculate the exact age difference between two people in years, months, days, weeks, and hours. Perfect for couples, siblings, or any date comparison.
Time Duration Calculator — Calculate duration between two times in hours, minutes, and decimal hours. Subtract break time for payroll and work hour tracking.
Time Card Calculator — Calculate weekly work hours, overtime, and gross pay from daily clock-in/out times with break deductions.

All calculators are accurate, require no signup, and run entirely in your browser. Browse all calculators →